1 /*
   2  * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 #include <dlfcn.h>
  26 #include <setjmp.h>
  27 #include <X11/Xlib.h>
  28 #include <limits.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include "gtk2_interface.h"
  32 #include "java_awt_Transparency.h"
  33 #include "jvm_md.h"
  34 #include "sizecalc.h"
  35 #include <jni_util.h>
  36 #include "awt.h"
  37 
  38 #define GTHREAD_LIB_VERSIONED VERSIONED_JNI_LIB_NAME("gthread-2.0", "0")
  39 #define GTHREAD_LIB JNI_LIB_NAME("gthread-2.0")
  40 
  41 #define GTK_TYPE_BORDER                 ((*fp_gtk_border_get_type)())
  42 
  43 #define G_TYPE_FUNDAMENTAL_SHIFT        (2)
  44 #define G_TYPE_MAKE_FUNDAMENTAL(x)      ((GType) ((x) << G_TYPE_FUNDAMENTAL_SHIFT))
  45 
  46 #define CONV_BUFFER_SIZE 128
  47 
  48 #define NO_SYMBOL_EXCEPTION 1
  49 
  50 static void *gtk2_libhandle = NULL;
  51 static void *gthread_libhandle = NULL;
  52 
  53 static jmp_buf j;
  54 
  55 /* Widgets */
  56 static GtkWidget *gtk2_widget = NULL;
  57 static GtkWidget *gtk2_window = NULL;
  58 static GtkFixed  *gtk2_fixed  = NULL;
  59 
  60 /* Paint system */
  61 static GdkPixmap *gtk2_white_pixmap = NULL;
  62 static GdkPixmap *gtk2_black_pixmap = NULL;
  63 static GdkPixbuf *gtk2_white_pixbuf = NULL;
  64 static GdkPixbuf *gtk2_black_pixbuf = NULL;
  65 static int gtk2_pixbuf_width = 0;
  66 static int gtk2_pixbuf_height = 0;
  67 
  68 /* Static buffer for conversion from java.lang.String to UTF-8 */
  69 static char convertionBuffer[CONV_BUFFER_SIZE];
  70 
  71 static gboolean new_combo = TRUE;
  72 const char ENV_PREFIX[] = "GTK_MODULES=";
  73 
  74 
  75 static GtkWidget *gtk2_widgets[_GTK_WIDGET_TYPE_SIZE];
  76 
  77 /*************************
  78  * Glib function pointers
  79  *************************/
  80 
  81 static gboolean (*fp_g_main_context_iteration)(GMainContext *context,
  82                                              gboolean may_block);
  83 
  84 static GValue*      (*fp_g_value_init)(GValue *value, GType g_type);
  85 static gboolean     (*fp_g_type_is_a)(GType type, GType is_a_type);
  86 static gboolean     (*fp_g_value_get_boolean)(const GValue *value);
  87 static gchar        (*fp_g_value_get_char)(const GValue *value);
  88 static guchar       (*fp_g_value_get_uchar)(const GValue *value);
  89 static gint         (*fp_g_value_get_int)(const GValue *value);
  90 static guint        (*fp_g_value_get_uint)(const GValue *value);
  91 static glong        (*fp_g_value_get_long)(const GValue *value);
  92 static gulong       (*fp_g_value_get_ulong)(const GValue *value);
  93 static gint64       (*fp_g_value_get_int64)(const GValue *value);
  94 static guint64      (*fp_g_value_get_uint64)(const GValue *value);
  95 static gfloat       (*fp_g_value_get_float)(const GValue *value);
  96 static gdouble      (*fp_g_value_get_double)(const GValue *value);
  97 static const gchar* (*fp_g_value_get_string)(const GValue *value);
  98 static gint         (*fp_g_value_get_enum)(const GValue *value);
  99 static guint        (*fp_g_value_get_flags)(const GValue *value);
 100 static GParamSpec*  (*fp_g_value_get_param)(const GValue *value);
 101 static gpointer*    (*fp_g_value_get_boxed)(const GValue *value);
 102 static gpointer*    (*fp_g_value_get_pointer)(const GValue *value);
 103 static GObject*     (*fp_g_value_get_object)(const GValue *value);
 104 static GParamSpec*  (*fp_g_param_spec_int)(const gchar *name,
 105         const gchar *nick, const gchar *blurb,
 106         gint minimum, gint maximum, gint default_value,
 107         GParamFlags flags);
 108 static void         (*fp_g_object_get)(gpointer object,
 109                                        const gchar* fpn, ...);
 110 static void         (*fp_g_object_set)(gpointer object,
 111                                        const gchar *first_property_name,
 112                                        ...);
 113 /************************
 114  * GDK function pointers
 115  ************************/
 116 static GdkPixmap *(*fp_gdk_pixmap_new)(GdkDrawable *drawable,
 117         gint width, gint height, gint depth);
 118 static GdkGC *(*fp_gdk_gc_new)(GdkDrawable*);
 119 static void (*fp_gdk_rgb_gc_set_foreground)(GdkGC*, guint32);
 120 static void (*fp_gdk_draw_rectangle)(GdkDrawable*, GdkGC*, gboolean,
 121         gint, gint, gint, gint);
 122 static GdkPixbuf *(*fp_gdk_pixbuf_new)(GdkColorspace colorspace,
 123         gboolean has_alpha, int bits_per_sample, int width, int height);
 124 static void (*fp_gdk_drawable_get_size)(GdkDrawable *drawable,
 125         gint* width, gint* height);
 126 
 127 /************************
 128  * Gtk function pointers
 129  ************************/
 130 static gboolean (*fp_gtk_init_check)(int* argc, char** argv);
 131 
 132 /* Painting */
 133 static void (*fp_gtk_paint_hline)(GtkStyle* style, GdkWindow* window,
 134         GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
 135         const gchar* detail, gint x1, gint x2, gint y);
 136 static void (*fp_gtk_paint_vline)(GtkStyle* style, GdkWindow* window,
 137         GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
 138         const gchar* detail, gint y1, gint y2, gint x);
 139 static void (*fp_gtk_paint_shadow)(GtkStyle* style, GdkWindow* window,
 140         GtkStateType state_type, GtkShadowType shadow_type,
 141         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 142         gint x, gint y, gint width, gint height);
 143 static void (*fp_gtk_paint_arrow)(GtkStyle* style, GdkWindow* window,
 144         GtkStateType state_type, GtkShadowType shadow_type,
 145         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 146         GtkArrowType arrow_type, gboolean fill, gint x, gint y,
 147         gint width, gint height);
 148 static void (*fp_gtk_paint_diamond)(GtkStyle* style, GdkWindow* window,
 149         GtkStateType state_type, GtkShadowType shadow_type,
 150         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 151         gint x, gint y, gint width, gint height);
 152 static void (*fp_gtk_paint_box)(GtkStyle* style, GdkWindow* window,
 153         GtkStateType state_type, GtkShadowType shadow_type,
 154         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 155         gint x, gint y, gint width, gint height);
 156 static void (*fp_gtk_paint_flat_box)(GtkStyle* style, GdkWindow* window,
 157         GtkStateType state_type, GtkShadowType shadow_type,
 158         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 159         gint x, gint y, gint width, gint height);
 160 static void (*fp_gtk_paint_check)(GtkStyle* style, GdkWindow* window,
 161         GtkStateType state_type, GtkShadowType shadow_type,
 162         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 163         gint x, gint y, gint width, gint height);
 164 static void (*fp_gtk_paint_option)(GtkStyle* style, GdkWindow* window,
 165         GtkStateType state_type, GtkShadowType shadow_type,
 166         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 167         gint x, gint y, gint width, gint height);
 168 static void (*fp_gtk_paint_box_gap)(GtkStyle* style, GdkWindow* window,
 169         GtkStateType state_type, GtkShadowType shadow_type,
 170         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 171         gint x, gint y, gint width, gint height,
 172         GtkPositionType gap_side, gint gap_x, gint gap_width);
 173 static void (*fp_gtk_paint_extension)(GtkStyle* style, GdkWindow* window,
 174         GtkStateType state_type, GtkShadowType shadow_type,
 175         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 176         gint x, gint y, gint width, gint height, GtkPositionType gap_side);
 177 static void (*fp_gtk_paint_focus)(GtkStyle* style, GdkWindow* window,
 178         GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
 179         const gchar* detail, gint x, gint y, gint width, gint height);
 180 static void (*fp_gtk_paint_slider)(GtkStyle* style, GdkWindow* window,
 181         GtkStateType state_type, GtkShadowType shadow_type,
 182         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 183         gint x, gint y, gint width, gint height, GtkOrientation orientation);
 184 static void (*fp_gtk_paint_handle)(GtkStyle* style, GdkWindow* window,
 185         GtkStateType state_type, GtkShadowType shadow_type,
 186         GdkRectangle* area, GtkWidget* widget, const gchar* detail,
 187         gint x, gint y, gint width, gint height, GtkOrientation orientation);
 188 static void (*fp_gtk_paint_expander)(GtkStyle* style, GdkWindow* window,
 189         GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
 190         const gchar* detail, gint x, gint y, GtkExpanderStyle expander_style);
 191 static void (*fp_gtk_style_apply_default_background)(GtkStyle* style,
 192         GdkWindow* window, gboolean set_bg, GtkStateType state_type,
 193         GdkRectangle* area, gint x, gint y, gint width, gint height);
 194 
 195 /* Widget creation */
 196 static GtkWidget* (*fp_gtk_arrow_new)(GtkArrowType arrow_type,
 197                                       GtkShadowType shadow_type);
 198 static GtkWidget* (*fp_gtk_button_new)();
 199 static GtkWidget* (*fp_gtk_check_button_new)();
 200 static GtkWidget* (*fp_gtk_check_menu_item_new)();
 201 static GtkWidget* (*fp_gtk_color_selection_dialog_new)(const gchar* title);
 202 static GtkWidget* (*fp_gtk_combo_box_new)();
 203 static GtkWidget* (*fp_gtk_combo_box_entry_new)();
 204 static GtkWidget* (*fp_gtk_entry_new)();
 205 static GtkWidget* (*fp_gtk_fixed_new)();
 206 static GtkWidget* (*fp_gtk_handle_box_new)();
 207 static GtkWidget* (*fp_gtk_hpaned_new)();
 208 static GtkWidget* (*fp_gtk_vpaned_new)();
 209 static GtkWidget* (*fp_gtk_hscale_new)(GtkAdjustment* adjustment);
 210 static GtkWidget* (*fp_gtk_vscale_new)(GtkAdjustment* adjustment);
 211 static GtkWidget* (*fp_gtk_hscrollbar_new)(GtkAdjustment* adjustment);
 212 static GtkWidget* (*fp_gtk_vscrollbar_new)(GtkAdjustment* adjustment);
 213 static GtkWidget* (*fp_gtk_hseparator_new)();
 214 static GtkWidget* (*fp_gtk_vseparator_new)();
 215 static GtkWidget* (*fp_gtk_image_new)();
 216 static GtkWidget* (*fp_gtk_label_new)(const gchar* str);
 217 static GtkWidget* (*fp_gtk_menu_new)();
 218 static GtkWidget* (*fp_gtk_menu_bar_new)();
 219 static GtkWidget* (*fp_gtk_menu_item_new)();
 220 static GtkWidget* (*fp_gtk_notebook_new)();
 221 static GtkWidget* (*fp_gtk_progress_bar_new)();
 222 static GtkWidget* (*fp_gtk_progress_bar_set_orientation)(
 223         GtkProgressBar *pbar,
 224         GtkProgressBarOrientation orientation);
 225 static GtkWidget* (*fp_gtk_radio_button_new)(GSList *group);
 226 static GtkWidget* (*fp_gtk_radio_menu_item_new)(GSList *group);
 227 static GtkWidget* (*fp_gtk_scrolled_window_new)(GtkAdjustment *hadjustment,
 228         GtkAdjustment *vadjustment);
 229 static GtkWidget* (*fp_gtk_separator_menu_item_new)();
 230 static GtkWidget* (*fp_gtk_separator_tool_item_new)();
 231 static GtkWidget* (*fp_gtk_text_view_new)();
 232 static GtkWidget* (*fp_gtk_toggle_button_new)();
 233 static GtkWidget* (*fp_gtk_toolbar_new)();
 234 static GtkWidget* (*fp_gtk_tree_view_new)();
 235 static GtkWidget* (*fp_gtk_viewport_new)(GtkAdjustment *hadjustment,
 236         GtkAdjustment *vadjustment);
 237 static GtkWidget* (*fp_gtk_window_new)(GtkWindowType type);
 238 static GtkWidget* (*fp_gtk_dialog_new)();
 239 static GtkWidget* (*fp_gtk_spin_button_new)(GtkAdjustment *adjustment,
 240         gdouble climb_rate, guint digits);
 241 static GtkWidget* (*fp_gtk_frame_new)(const gchar *label);
 242 
 243 /* Other widget operations */
 244 static GtkObject* (*fp_gtk_adjustment_new)(gdouble value,
 245         gdouble lower, gdouble upper, gdouble step_increment,
 246         gdouble page_increment, gdouble page_size);
 247 static void (*fp_gtk_container_add)(GtkContainer *window, GtkWidget *widget);
 248 static void (*fp_gtk_menu_shell_append)(GtkMenuShell *menu_shell,
 249         GtkWidget *child);
 250 static void (*fp_gtk_menu_item_set_submenu)(GtkMenuItem *menu_item,
 251         GtkWidget *submenu);
 252 static void (*fp_gtk_widget_realize)(GtkWidget *widget);
 253 static GdkPixbuf* (*fp_gtk_widget_render_icon)(GtkWidget *widget,
 254         const gchar *stock_id, GtkIconSize size, const gchar *detail);
 255 static void (*fp_gtk_widget_set_name)(GtkWidget *widget, const gchar *name);
 256 static void (*fp_gtk_widget_set_parent)(GtkWidget *widget, GtkWidget *parent);
 257 static void (*fp_gtk_widget_set_direction)(GtkWidget *widget,
 258         GtkTextDirection direction);
 259 static void (*fp_gtk_widget_style_get)(GtkWidget *widget,
 260         const gchar *first_property_name, ...);
 261 static void (*fp_gtk_widget_class_install_style_property)(
 262         GtkWidgetClass* class, GParamSpec *pspec);
 263 static GParamSpec* (*fp_gtk_widget_class_find_style_property)(
 264         GtkWidgetClass* class, const gchar* property_name);
 265 static void (*fp_gtk_widget_style_get_property)(GtkWidget* widget,
 266         const gchar* property_name, GValue* value);
 267 static char* (*fp_pango_font_description_to_string)(
 268         const PangoFontDescription* fd);
 269 static GtkSettings* (*fp_gtk_settings_get_default)();
 270 static GtkSettings* (*fp_gtk_widget_get_settings)(GtkWidget *widget);
 271 static GType        (*fp_gtk_border_get_type)();
 272 static void (*fp_gtk_arrow_set)(GtkWidget* arrow,
 273                                 GtkArrowType arrow_type,
 274                                 GtkShadowType shadow_type);
 275 static void (*fp_gtk_widget_size_request)(GtkWidget *widget,
 276                                           GtkRequisition *requisition);
 277 static GtkAdjustment* (*fp_gtk_range_get_adjustment)(GtkRange* range);
 278 
 279 /* Method bodies */
 280 
 281 static void throw_exception(JNIEnv *env, const char* name, const char* message)
 282 {
 283     jclass class = (*env)->FindClass(env, name);
 284 
 285     if (class != NULL)
 286         (*env)->ThrowNew(env, class, message);
 287 
 288     (*env)->DeleteLocalRef(env, class);
 289 }
 290 
 291 /* This is a workaround for the bug:
 292  * http://sourceware.org/bugzilla/show_bug.cgi?id=1814
 293  * (dlsym/dlopen clears dlerror state)
 294  * This bug is specific to Linux, but there is no harm in
 295  * applying this workaround on Solaris as well.
 296  */
 297 static void* dl_symbol(const char* name)
 298 {
 299     void* result = dlsym(gtk2_libhandle, name);
 300     if (!result)
 301         longjmp(j, NO_SYMBOL_EXCEPTION);
 302 
 303     return result;
 304 }
 305 
 306 static void* dl_symbol_gthread(const char* name)
 307 {
 308     void* result = dlsym(gthread_libhandle, name);
 309     if (!result)
 310         longjmp(j, NO_SYMBOL_EXCEPTION);
 311 
 312     return result;
 313 }
 314 
 315 gboolean gtk2_check(const char* lib_name, gboolean load)
 316 {
 317     if (gtk2_libhandle != NULL) {
 318         /* We've already successfully opened the GTK libs, so return true. */
 319         return TRUE;
 320     } else {
 321         void *lib = NULL;
 322 
 323 #ifdef RTLD_NOLOAD
 324         /* Just check if gtk libs are already in the process space */
 325         lib = dlopen(lib_name, RTLD_LAZY | RTLD_NOLOAD);
 326         if (!load || lib != NULL) {
 327             return lib != NULL;
 328         }
 329 #else
 330 #ifdef _AIX
 331         /* On AIX we could implement this with the help of loadquery(L_GETINFO, ..)  */
 332         /* (see reload_table() in hotspot/src/os/aix/vm/loadlib_aix.cpp) but it is   */
 333         /* probably not worth it because most AIX servers don't have GTK libs anyway */
 334 #endif
 335 #endif
 336 
 337         lib = dlopen(lib_name, RTLD_LAZY | RTLD_LOCAL);
 338         if (lib == NULL) {
 339             return FALSE;
 340         }
 341 
 342         fp_gtk_check_version = dlsym(lib, "gtk_check_version");
 343         /* Check for GTK 2.2+ */
 344         if (!fp_gtk_check_version(2, 2, 0)) {
 345             return TRUE;
 346         }
 347 
 348         // 8048289: workaround for https://bugzilla.gnome.org/show_bug.cgi?id=733065
 349         // dlclose(lib);
 350 
 351         return FALSE;
 352     }
 353 }
 354 
 355 #define ADD_SUPPORTED_ACTION(actionStr) \
 356 do { \
 357     jfieldID fld_action = (*env)->GetStaticFieldID(env, cls_action, actionStr, "Ljava/awt/Desktop$Action;"); \
 358     if (!(*env)->ExceptionCheck(env)) { \
 359         jobject action = (*env)->GetStaticObjectField(env, cls_action, fld_action); \
 360         (*env)->CallBooleanMethod(env, supportedActions, mid_arrayListAdd, action); \
 361     } else { \
 362         (*env)->ExceptionClear(env); \
 363     } \
 364 } while(0);
 365 
 366 
 367 static void update_supported_actions(JNIEnv *env) {
 368     GVfs * (*fp_g_vfs_get_default) (void);
 369     const gchar * const * (*fp_g_vfs_get_supported_uri_schemes) (GVfs * vfs);
 370     const gchar * const * schemes = NULL;
 371 
 372     jclass cls_action = (*env)->FindClass(env, "java/awt/Desktop$Action");
 373     CHECK_NULL(cls_action);
 374     jclass cls_xDesktopPeer = (*env)->FindClass(env, "sun/awt/X11/XDesktopPeer");
 375     CHECK_NULL(cls_xDesktopPeer);
 376     jfieldID fld_supportedActions = (*env)->GetStaticFieldID(env, cls_xDesktopPeer, "supportedActions", "Ljava/util/List;");
 377     CHECK_NULL(fld_supportedActions);
 378     jobject supportedActions = (*env)->GetStaticObjectField(env, cls_xDesktopPeer, fld_supportedActions);
 379 
 380     jclass cls_arrayList = (*env)->FindClass(env, "java/util/ArrayList");
 381     CHECK_NULL(cls_arrayList);
 382     jmethodID mid_arrayListAdd = (*env)->GetMethodID(env, cls_arrayList, "add", "(Ljava/lang/Object;)Z");
 383     CHECK_NULL(mid_arrayListAdd);
 384     jmethodID mid_arrayListClear = (*env)->GetMethodID(env, cls_arrayList, "clear", "()V");
 385     CHECK_NULL(mid_arrayListClear);
 386 
 387     (*env)->CallVoidMethod(env, supportedActions, mid_arrayListClear);
 388 
 389     ADD_SUPPORTED_ACTION("OPEN");
 390 
 391     /**
 392      * gtk_show_uri() documentation says:
 393      *
 394      * > you need to install gvfs to get support for uri schemes such as http://
 395      * > or ftp://, as only local files are handled by GIO itself.
 396      *
 397      * So OPEN action was safely added here.
 398      * However, it looks like Solaris 11 have gvfs support only for 32-bit
 399      * applications only by default.
 400      */
 401 
 402     fp_g_vfs_get_default = dl_symbol("g_vfs_get_default");
 403     fp_g_vfs_get_supported_uri_schemes = dl_symbol("g_vfs_get_supported_uri_schemes");
 404     dlerror();
 405 
 406     if (fp_g_vfs_get_default && fp_g_vfs_get_supported_uri_schemes) {
 407         GVfs * vfs = fp_g_vfs_get_default();
 408         schemes = vfs ? fp_g_vfs_get_supported_uri_schemes(vfs) : NULL;
 409         if (schemes) {
 410             int i = 0;
 411             while (schemes[i]) {
 412                 if (strcmp(schemes[i], "http") == 0) {
 413                     ADD_SUPPORTED_ACTION("BROWSE");
 414                     ADD_SUPPORTED_ACTION("MAIL");
 415                     break;
 416                 }
 417                 i++;
 418             }
 419         }
 420     } else {
 421 #ifdef DEBUG
 422         fprintf(stderr, "Cannot load g_vfs_get_supported_uri_schemes\n");
 423 #endif /* DEBUG */
 424     }
 425 
 426 }
 427 /**
 428  * Functions for awt_Desktop.c
 429  */
 430 static gboolean gtk2_show_uri_load(JNIEnv *env) {
 431      gboolean success = FALSE;
 432      dlerror();
 433      const char *gtk_version = fp_gtk_check_version(2, 14, 0);
 434      if (gtk_version != NULL) {
 435          // The gtk_show_uri is available from GTK+ 2.14
 436 #ifdef DEBUG
 437          fprintf (stderr, "The version of GTK is %s. "
 438              "The gtk_show_uri function is supported "
 439              "since GTK+ 2.14.\n", gtk_version);
 440 #endif /* DEBUG */
 441      } else {
 442          // Loading symbols only if the GTK version is 2.14 and higher
 443          fp_gtk_show_uri = dl_symbol("gtk_show_uri");
 444          const char *dlsym_error = dlerror();
 445          if (dlsym_error) {
 446 #ifdef DEBUG
 447              fprintf (stderr, "Cannot load symbol: %s \n", dlsym_error);
 448 #endif /* DEBUG */
 449          } else if (fp_gtk_show_uri == NULL) {
 450 #ifdef DEBUG
 451              fprintf(stderr, "dlsym(gtk_show_uri) returned NULL\n");
 452 #endif /* DEBUG */
 453         } else {
 454             gtk->gtk_show_uri = fp_gtk_show_uri;
 455             update_supported_actions(env);
 456             success = TRUE;
 457         }
 458      }
 459      return success;
 460 }
 461 
 462 /**
 463  * Functions for sun_awt_X11_GtkFileDialogPeer.c
 464  */
 465 static void gtk2_file_chooser_load()
 466 {
 467     fp_gtk_file_chooser_get_filename = dl_symbol(
 468             "gtk_file_chooser_get_filename");
 469     fp_gtk_file_chooser_dialog_new = dl_symbol("gtk_file_chooser_dialog_new");
 470     fp_gtk_file_chooser_set_current_folder = dl_symbol(
 471             "gtk_file_chooser_set_current_folder");
 472     fp_gtk_file_chooser_set_filename = dl_symbol(
 473             "gtk_file_chooser_set_filename");
 474     fp_gtk_file_chooser_set_current_name = dl_symbol(
 475             "gtk_file_chooser_set_current_name");
 476     fp_gtk_file_filter_add_custom = dl_symbol("gtk_file_filter_add_custom");
 477     fp_gtk_file_chooser_set_filter = dl_symbol("gtk_file_chooser_set_filter");
 478     fp_gtk_file_chooser_get_type = dl_symbol("gtk_file_chooser_get_type");
 479     fp_gtk_file_filter_new = dl_symbol("gtk_file_filter_new");
 480     if (fp_gtk_check_version(2, 8, 0) == NULL) {
 481         fp_gtk_file_chooser_set_do_overwrite_confirmation = dl_symbol(
 482                 "gtk_file_chooser_set_do_overwrite_confirmation");
 483     }
 484     fp_gtk_file_chooser_set_select_multiple = dl_symbol(
 485             "gtk_file_chooser_set_select_multiple");
 486     fp_gtk_file_chooser_get_current_folder = dl_symbol(
 487             "gtk_file_chooser_get_current_folder");
 488     fp_gtk_file_chooser_get_filenames = dl_symbol(
 489             "gtk_file_chooser_get_filenames");
 490     fp_gtk_g_slist_length = dl_symbol("g_slist_length");
 491     fp_gdk_x11_drawable_get_xid = dl_symbol("gdk_x11_drawable_get_xid");
 492 }
 493 
 494 GtkApi* gtk2_load(JNIEnv *env, const char* lib_name)
 495 {
 496     gboolean result;
 497     int i;
 498     int (*handler)();
 499     int (*io_handler)();
 500     char *gtk_modules_env;
 501 
 502     gtk2_libhandle = dlopen(lib_name, RTLD_LAZY | RTLD_LOCAL);
 503     if (gtk2_libhandle == NULL) {
 504         return FALSE;
 505     }
 506 
 507     gthread_libhandle = dlopen(GTHREAD_LIB_VERSIONED, RTLD_LAZY | RTLD_LOCAL);
 508     if (gthread_libhandle == NULL) {
 509         gthread_libhandle = dlopen(GTHREAD_LIB, RTLD_LAZY | RTLD_LOCAL);
 510         if (gthread_libhandle == NULL)
 511             return FALSE;
 512     }
 513 
 514     if (setjmp(j) == 0)
 515     {
 516         fp_gtk_check_version = dl_symbol("gtk_check_version");
 517         /* Check for GTK 2.2+ */
 518         if (fp_gtk_check_version(2, 2, 0)) {
 519             longjmp(j, NO_SYMBOL_EXCEPTION);
 520         }
 521 
 522         /* GLib */
 523         fp_glib_check_version = dlsym(gtk2_libhandle, "glib_check_version");
 524         if (!fp_glib_check_version) {
 525             dlerror();
 526         }
 527         fp_g_free = dl_symbol("g_free");
 528         fp_g_object_unref = dl_symbol("g_object_unref");
 529 
 530         fp_g_main_context_iteration =
 531             dl_symbol("g_main_context_iteration");
 532 
 533         fp_g_value_init = dl_symbol("g_value_init");
 534         fp_g_type_is_a = dl_symbol("g_type_is_a");
 535 
 536         fp_g_value_get_boolean = dl_symbol("g_value_get_boolean");
 537         fp_g_value_get_char = dl_symbol("g_value_get_char");
 538         fp_g_value_get_uchar = dl_symbol("g_value_get_uchar");
 539         fp_g_value_get_int = dl_symbol("g_value_get_int");
 540         fp_g_value_get_uint = dl_symbol("g_value_get_uint");
 541         fp_g_value_get_long = dl_symbol("g_value_get_long");
 542         fp_g_value_get_ulong = dl_symbol("g_value_get_ulong");
 543         fp_g_value_get_int64 = dl_symbol("g_value_get_int64");
 544         fp_g_value_get_uint64 = dl_symbol("g_value_get_uint64");
 545         fp_g_value_get_float = dl_symbol("g_value_get_float");
 546         fp_g_value_get_double = dl_symbol("g_value_get_double");
 547         fp_g_value_get_string = dl_symbol("g_value_get_string");
 548         fp_g_value_get_enum = dl_symbol("g_value_get_enum");
 549         fp_g_value_get_flags = dl_symbol("g_value_get_flags");
 550         fp_g_value_get_param = dl_symbol("g_value_get_param");
 551         fp_g_value_get_boxed = dl_symbol("g_value_get_boxed");
 552         fp_g_value_get_pointer = dl_symbol("g_value_get_pointer");
 553         fp_g_value_get_object = dl_symbol("g_value_get_object");
 554         fp_g_param_spec_int = dl_symbol("g_param_spec_int");
 555         fp_g_object_get = dl_symbol("g_object_get");
 556         fp_g_object_set = dl_symbol("g_object_set");
 557 
 558         /* GDK */
 559         fp_gdk_get_default_root_window =
 560             dl_symbol("gdk_get_default_root_window");
 561         fp_gdk_pixmap_new = dl_symbol("gdk_pixmap_new");
 562         fp_gdk_pixbuf_get_from_drawable =
 563             dl_symbol("gdk_pixbuf_get_from_drawable");
 564         fp_gdk_pixbuf_scale_simple =
 565             dl_symbol("gdk_pixbuf_scale_simple");
 566         fp_gdk_gc_new = dl_symbol("gdk_gc_new");
 567         fp_gdk_rgb_gc_set_foreground =
 568             dl_symbol("gdk_rgb_gc_set_foreground");
 569         fp_gdk_draw_rectangle = dl_symbol("gdk_draw_rectangle");
 570         fp_gdk_drawable_get_size = dl_symbol("gdk_drawable_get_size");
 571 
 572         /* Pixbuf */
 573         fp_gdk_pixbuf_new = dl_symbol("gdk_pixbuf_new");
 574         fp_gdk_pixbuf_new_from_file =
 575                 dl_symbol("gdk_pixbuf_new_from_file");
 576         fp_gdk_pixbuf_get_width = dl_symbol("gdk_pixbuf_get_width");
 577         fp_gdk_pixbuf_get_height = dl_symbol("gdk_pixbuf_get_height");
 578         fp_gdk_pixbuf_get_pixels = dl_symbol("gdk_pixbuf_get_pixels");
 579         fp_gdk_pixbuf_get_rowstride =
 580                 dl_symbol("gdk_pixbuf_get_rowstride");
 581         fp_gdk_pixbuf_get_has_alpha =
 582                 dl_symbol("gdk_pixbuf_get_has_alpha");
 583         fp_gdk_pixbuf_get_bits_per_sample =
 584                 dl_symbol("gdk_pixbuf_get_bits_per_sample");
 585         fp_gdk_pixbuf_get_n_channels =
 586                 dl_symbol("gdk_pixbuf_get_n_channels");
 587         fp_gdk_pixbuf_get_colorspace =
 588                 dl_symbol("gdk_pixbuf_get_colorspace");
 589 
 590         /* GTK painting */
 591         fp_gtk_init_check = dl_symbol("gtk_init_check");
 592         fp_gtk_paint_hline = dl_symbol("gtk_paint_hline");
 593         fp_gtk_paint_vline = dl_symbol("gtk_paint_vline");
 594         fp_gtk_paint_shadow = dl_symbol("gtk_paint_shadow");
 595         fp_gtk_paint_arrow = dl_symbol("gtk_paint_arrow");
 596         fp_gtk_paint_diamond = dl_symbol("gtk_paint_diamond");
 597         fp_gtk_paint_box = dl_symbol("gtk_paint_box");
 598         fp_gtk_paint_flat_box = dl_symbol("gtk_paint_flat_box");
 599         fp_gtk_paint_check = dl_symbol("gtk_paint_check");
 600         fp_gtk_paint_option = dl_symbol("gtk_paint_option");
 601         fp_gtk_paint_box_gap = dl_symbol("gtk_paint_box_gap");
 602         fp_gtk_paint_extension = dl_symbol("gtk_paint_extension");
 603         fp_gtk_paint_focus = dl_symbol("gtk_paint_focus");
 604         fp_gtk_paint_slider = dl_symbol("gtk_paint_slider");
 605         fp_gtk_paint_handle = dl_symbol("gtk_paint_handle");
 606         fp_gtk_paint_expander = dl_symbol("gtk_paint_expander");
 607         fp_gtk_style_apply_default_background =
 608                 dl_symbol("gtk_style_apply_default_background");
 609 
 610         /* GTK widgets */
 611         fp_gtk_arrow_new = dl_symbol("gtk_arrow_new");
 612         fp_gtk_button_new = dl_symbol("gtk_button_new");
 613         fp_gtk_spin_button_new = dl_symbol("gtk_spin_button_new");
 614         fp_gtk_check_button_new = dl_symbol("gtk_check_button_new");
 615         fp_gtk_check_menu_item_new =
 616                 dl_symbol("gtk_check_menu_item_new");
 617         fp_gtk_color_selection_dialog_new =
 618                 dl_symbol("gtk_color_selection_dialog_new");
 619         fp_gtk_entry_new = dl_symbol("gtk_entry_new");
 620         fp_gtk_fixed_new = dl_symbol("gtk_fixed_new");
 621         fp_gtk_handle_box_new = dl_symbol("gtk_handle_box_new");
 622         fp_gtk_image_new = dl_symbol("gtk_image_new");
 623         fp_gtk_hpaned_new = dl_symbol("gtk_hpaned_new");
 624         fp_gtk_vpaned_new = dl_symbol("gtk_vpaned_new");
 625         fp_gtk_hscale_new = dl_symbol("gtk_hscale_new");
 626         fp_gtk_vscale_new = dl_symbol("gtk_vscale_new");
 627         fp_gtk_hscrollbar_new = dl_symbol("gtk_hscrollbar_new");
 628         fp_gtk_vscrollbar_new = dl_symbol("gtk_vscrollbar_new");
 629         fp_gtk_hseparator_new = dl_symbol("gtk_hseparator_new");
 630         fp_gtk_vseparator_new = dl_symbol("gtk_vseparator_new");
 631         fp_gtk_label_new = dl_symbol("gtk_label_new");
 632         fp_gtk_menu_new = dl_symbol("gtk_menu_new");
 633         fp_gtk_menu_bar_new = dl_symbol("gtk_menu_bar_new");
 634         fp_gtk_menu_item_new = dl_symbol("gtk_menu_item_new");
 635         fp_gtk_menu_item_set_submenu =
 636                 dl_symbol("gtk_menu_item_set_submenu");
 637         fp_gtk_notebook_new = dl_symbol("gtk_notebook_new");
 638         fp_gtk_progress_bar_new =
 639             dl_symbol("gtk_progress_bar_new");
 640         fp_gtk_progress_bar_set_orientation =
 641             dl_symbol("gtk_progress_bar_set_orientation");
 642         fp_gtk_radio_button_new =
 643             dl_symbol("gtk_radio_button_new");
 644         fp_gtk_radio_menu_item_new =
 645             dl_symbol("gtk_radio_menu_item_new");
 646         fp_gtk_scrolled_window_new =
 647             dl_symbol("gtk_scrolled_window_new");
 648         fp_gtk_separator_menu_item_new =
 649             dl_symbol("gtk_separator_menu_item_new");
 650         fp_gtk_text_view_new = dl_symbol("gtk_text_view_new");
 651         fp_gtk_toggle_button_new =
 652             dl_symbol("gtk_toggle_button_new");
 653         fp_gtk_toolbar_new = dl_symbol("gtk_toolbar_new");
 654         fp_gtk_tree_view_new = dl_symbol("gtk_tree_view_new");
 655         fp_gtk_viewport_new = dl_symbol("gtk_viewport_new");
 656         fp_gtk_window_new = dl_symbol("gtk_window_new");
 657         fp_gtk_window_present = dl_symbol("gtk_window_present");
 658         fp_gtk_window_move = dl_symbol("gtk_window_move");
 659         fp_gtk_window_resize = dl_symbol("gtk_window_resize");
 660 
 661           fp_gtk_dialog_new = dl_symbol("gtk_dialog_new");
 662         fp_gtk_frame_new = dl_symbol("gtk_frame_new");
 663 
 664         fp_gtk_adjustment_new = dl_symbol("gtk_adjustment_new");
 665         fp_gtk_container_add = dl_symbol("gtk_container_add");
 666         fp_gtk_menu_shell_append =
 667             dl_symbol("gtk_menu_shell_append");
 668         fp_gtk_widget_realize = dl_symbol("gtk_widget_realize");
 669         fp_gtk_widget_destroy = dl_symbol("gtk_widget_destroy");
 670         fp_gtk_widget_render_icon =
 671             dl_symbol("gtk_widget_render_icon");
 672         fp_gtk_widget_set_name =
 673             dl_symbol("gtk_widget_set_name");
 674         fp_gtk_widget_set_parent =
 675             dl_symbol("gtk_widget_set_parent");
 676         fp_gtk_widget_set_direction =
 677             dl_symbol("gtk_widget_set_direction");
 678         fp_gtk_widget_style_get =
 679             dl_symbol("gtk_widget_style_get");
 680         fp_gtk_widget_class_install_style_property =
 681             dl_symbol("gtk_widget_class_install_style_property");
 682         fp_gtk_widget_class_find_style_property =
 683             dl_symbol("gtk_widget_class_find_style_property");
 684         fp_gtk_widget_style_get_property =
 685             dl_symbol("gtk_widget_style_get_property");
 686         fp_pango_font_description_to_string =
 687             dl_symbol("pango_font_description_to_string");
 688         fp_gtk_settings_get_default =
 689             dl_symbol("gtk_settings_get_default");
 690         fp_gtk_widget_get_settings =
 691             dl_symbol("gtk_widget_get_settings");
 692         fp_gtk_border_get_type =  dl_symbol("gtk_border_get_type");
 693         fp_gtk_arrow_set = dl_symbol("gtk_arrow_set");
 694         fp_gtk_widget_size_request =
 695             dl_symbol("gtk_widget_size_request");
 696         fp_gtk_range_get_adjustment =
 697             dl_symbol("gtk_range_get_adjustment");
 698 
 699         fp_gtk_widget_hide = dl_symbol("gtk_widget_hide");
 700         fp_gtk_main_quit = dl_symbol("gtk_main_quit");
 701         fp_g_signal_connect_data = dl_symbol("g_signal_connect_data");
 702         fp_gtk_widget_show = dl_symbol("gtk_widget_show");
 703         fp_gtk_main = dl_symbol("gtk_main");
 704 
 705         fp_g_path_get_dirname = dl_symbol("g_path_get_dirname");
 706 
 707         /**
 708          * GLib thread system
 709          */
 710         if (GLIB_CHECK_VERSION(2, 20, 0)) {
 711             fp_g_thread_get_initialized = dl_symbol_gthread("g_thread_get_initialized");
 712         }
 713         fp_g_thread_init = dl_symbol_gthread("g_thread_init");
 714         fp_gdk_threads_init = dl_symbol("gdk_threads_init");
 715         fp_gdk_threads_enter = dl_symbol("gdk_threads_enter");
 716         fp_gdk_threads_leave = dl_symbol("gdk_threads_leave");
 717 
 718         /**
 719          * Functions for sun_awt_X11_GtkFileDialogPeer.c
 720          */
 721         if (fp_gtk_check_version(2, 4, 0) == NULL) {
 722             // The current GtkFileChooser is available from GTK+ 2.4
 723             gtk2_file_chooser_load();
 724         }
 725 
 726         /* Some functions may be missing in pre-2.4 GTK.
 727            We handle them specially here.
 728          */
 729         fp_gtk_combo_box_new = dlsym(gtk2_libhandle, "gtk_combo_box_new");
 730         if (fp_gtk_combo_box_new == NULL) {
 731             fp_gtk_combo_box_new = dl_symbol("gtk_combo_new");
 732         }
 733 
 734         fp_gtk_combo_box_entry_new =
 735             dlsym(gtk2_libhandle, "gtk_combo_box_entry_new");
 736         if (fp_gtk_combo_box_entry_new == NULL) {
 737             fp_gtk_combo_box_entry_new = dl_symbol("gtk_combo_new");
 738             new_combo = FALSE;
 739         }
 740 
 741         fp_gtk_separator_tool_item_new =
 742             dlsym(gtk2_libhandle, "gtk_separator_tool_item_new");
 743         if (fp_gtk_separator_tool_item_new == NULL) {
 744             fp_gtk_separator_tool_item_new =
 745                 dl_symbol("gtk_vseparator_new");
 746         }
 747 
 748         fp_g_list_append = dl_symbol("g_list_append");
 749         fp_g_list_free = dl_symbol("g_list_free");
 750         fp_g_list_free_full = dl_symbol("g_list_free_full");
 751     }
 752     /* Now we have only one kind of exceptions: NO_SYMBOL_EXCEPTION
 753      * Otherwise we can check the return value of setjmp method.
 754      */
 755     else
 756     {
 757         dlclose(gtk2_libhandle);
 758         gtk2_libhandle = NULL;
 759 
 760         dlclose(gthread_libhandle);
 761         gthread_libhandle = NULL;
 762 
 763         return FALSE;
 764     }
 765 
 766     /*
 767      * Strip the AT-SPI GTK_MODULEs if present
 768      */
 769     gtk_modules_env = getenv ("GTK_MODULES");
 770 
 771     if (gtk_modules_env && strstr (gtk_modules_env, "atk-bridge") ||
 772         gtk_modules_env && strstr (gtk_modules_env, "gail"))
 773     {
 774         /* the new env will be smaller than the old one */
 775         gchar *s, *new_env = SAFE_SIZE_STRUCT_ALLOC(malloc,
 776                 sizeof(ENV_PREFIX), 1, strlen (gtk_modules_env));
 777 
 778         if (new_env != NULL )
 779         {
 780             /* careful, strtok modifies its args */
 781             gchar *tmp_env = strdup (gtk_modules_env);
 782             strcpy(new_env, ENV_PREFIX);
 783 
 784             /* strip out 'atk-bridge' and 'gail' */
 785             size_t PREFIX_LENGTH = strlen(ENV_PREFIX);
 786             while (s = strtok(tmp_env, ":"))
 787             {
 788                 if ((!strstr (s, "atk-bridge")) && (!strstr (s, "gail")))
 789                 {
 790                     if (strlen (new_env) > PREFIX_LENGTH) {
 791                         new_env = strcat (new_env, ":");
 792                     }
 793                     new_env = strcat(new_env, s);
 794                 }
 795                 if (tmp_env)
 796                 {
 797                     free (tmp_env);
 798                     tmp_env = NULL; /* next call to strtok arg1==NULL */
 799                 }
 800             }
 801             putenv (new_env);
 802             free (new_env);
 803             free (tmp_env);
 804         }
 805     }
 806 
 807     /*
 808      * GTK should be initialized with gtk_init_check() before use.
 809      *
 810      * gtk_init_check installs its own error handlers. It is critical that
 811      * we preserve error handler set from AWT. Otherwise we'll crash on
 812      * BadMatch errors which we would normally ignore. The IO error handler
 813      * is preserved here, too, just for consistency.
 814     */
 815     AWT_LOCK();
 816     handler = XSetErrorHandler(NULL);
 817     io_handler = XSetIOErrorHandler(NULL);
 818 
 819     if (fp_gtk_check_version(2, 2, 0) == NULL) {
 820 
 821         // Calling g_thread_init() multiple times leads to crash on GLib < 2.24
 822         // We can use g_thread_get_initialized () but it is available only for
 823         // GLib >= 2.20.
 824         gboolean is_g_thread_get_initialized = FALSE;
 825         if (GLIB_CHECK_VERSION(2, 20, 0)) {
 826             is_g_thread_get_initialized = fp_g_thread_get_initialized();
 827         }
 828 
 829         if (!is_g_thread_get_initialized) {
 830             fp_g_thread_init(NULL);
 831         }
 832 
 833         //According the GTK documentation, gdk_threads_init() should be
 834         //called before gtk_init() or gtk_init_check()
 835         fp_gdk_threads_init();
 836     }
 837     result = (*fp_gtk_init_check)(NULL, NULL);
 838 
 839     XSetErrorHandler(handler);
 840     XSetIOErrorHandler(io_handler);
 841     AWT_UNLOCK();
 842 
 843     /* Initialize widget array. */
 844     for (i = 0; i < _GTK_WIDGET_TYPE_SIZE; i++)
 845     {
 846         gtk2_widgets[i] = NULL;
 847     }
 848     if (result) {
 849         GtkApi* gtk = (GtkApi*)malloc(sizeof(GtkApi));
 850         gtk2_init(gtk);
 851         return gtk;
 852     }
 853     return NULL;
 854 }
 855 
 856 int gtk2_unload()
 857 {
 858     int i;
 859     char *gtk2_error;
 860 
 861     if (!gtk2_libhandle)
 862         return TRUE;
 863 
 864     /* Release painting objects */
 865     if (gtk2_white_pixmap != NULL) {
 866         (*fp_g_object_unref)(gtk2_white_pixmap);
 867         (*fp_g_object_unref)(gtk2_black_pixmap);
 868         (*fp_g_object_unref)(gtk2_white_pixbuf);
 869         (*fp_g_object_unref)(gtk2_black_pixbuf);
 870         gtk2_white_pixmap = gtk2_black_pixmap =
 871             gtk2_white_pixbuf = gtk2_black_pixbuf = NULL;
 872     }
 873     gtk2_pixbuf_width = 0;
 874     gtk2_pixbuf_height = 0;
 875 
 876     if (gtk2_window != NULL) {
 877         /* Destroying toplevel widget will destroy all contained widgets */
 878         (*fp_gtk_widget_destroy)(gtk2_window);
 879 
 880         /* Unset some static data so they get reinitialized on next load */
 881         gtk2_window = NULL;
 882     }
 883 
 884     dlerror();
 885     dlclose(gtk2_libhandle);
 886     dlclose(gthread_libhandle);
 887     if ((gtk2_error = dlerror()) != NULL)
 888     {
 889         return FALSE;
 890     }
 891     return TRUE;
 892 }
 893 
 894 /* Dispatch all pending events from the GTK event loop.
 895  * This is needed to catch theme change and update widgets' style.
 896  */
 897 static void flush_gtk_event_loop()
 898 {
 899     while( (*fp_g_main_context_iteration)(NULL, FALSE));
 900 }
 901 
 902 /*
 903  * Initialize components of containment hierarchy. This creates a GtkFixed
 904  * inside a GtkWindow. All widgets get realized.
 905  */
 906 static void init_containers()
 907 {
 908     if (gtk2_window == NULL)
 909     {
 910         gtk2_window = (*fp_gtk_window_new)(GTK_WINDOW_TOPLEVEL);
 911         gtk2_fixed = (GtkFixed *)(*fp_gtk_fixed_new)();
 912         (*fp_gtk_container_add)((GtkContainer*)gtk2_window,
 913                                 (GtkWidget *)gtk2_fixed);
 914         (*fp_gtk_widget_realize)(gtk2_window);
 915         (*fp_gtk_widget_realize)((GtkWidget *)gtk2_fixed);
 916     }
 917 }
 918 
 919 /*
 920  * Ensure everything is ready for drawing an element of the specified width
 921  * and height.
 922  *
 923  * We should somehow handle translucent images. GTK can draw to X Drawables
 924  * only, which don't support alpha. When we retrieve the image back from
 925  * the server, translucency information is lost. There're several ways to
 926  * work around this:
 927  * 1) Subclass GdkPixmap and cache translucent objects on client side. This
 928  * requires us to implement parts of X server drawing logic on client side.
 929  * Many X requests can potentially be "translucent"; e.g. XDrawLine with
 930  * fill=tile and a translucent tile is a "translucent" operation, whereas
 931  * XDrawLine with fill=solid is an "opaque" one. Moreover themes can (and some
 932  * do) intermix transparent and opaque operations which makes caching even
 933  * more problematic.
 934  * 2) Use Xorg 32bit ARGB visual when available. GDK has no native support
 935  * for it (as of version 2.6). Also even in JDS 3 Xorg does not support
 936  * these visuals by default, which makes optimizing for them pointless.
 937  * We can consider doing this at a later point when ARGB visuals become more
 938  * popular.
 939  * 3') GTK has plans to use Cairo as its graphical backend (presumably in
 940  * 2.8), and Cairo supports alpha. With it we could also get rid of the
 941  * unnecessary round trip to server and do all the drawing on client side.
 942  * 4) For now we draw to two different pixmaps and restore alpha channel by
 943  * comparing results. This can be optimized by using subclassed pixmap and
 944  * doing the second drawing only if necessary.
 945 */
 946 static void gtk2_init_painting(JNIEnv *env, gint width, gint height)
 947 {
 948     GdkGC *gc;
 949     GdkPixbuf *white, *black;
 950 
 951     init_containers();
 952 
 953     if (gtk2_pixbuf_width < width || gtk2_pixbuf_height < height)
 954     {
 955         white = (*fp_gdk_pixbuf_new)(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 956         black = (*fp_gdk_pixbuf_new)(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 957 
 958         if (white == NULL || black == NULL)
 959         {
 960             snprintf(convertionBuffer, CONV_BUFFER_SIZE, "Couldn't create pixbuf of size %dx%d", width, height);
 961             throw_exception(env, "java/lang/RuntimeException", convertionBuffer);
 962             fp_gdk_threads_leave();
 963             return;
 964         }
 965 
 966         if (gtk2_white_pixmap != NULL) {
 967             /* free old stuff */
 968             (*fp_g_object_unref)(gtk2_white_pixmap);
 969             (*fp_g_object_unref)(gtk2_black_pixmap);
 970             (*fp_g_object_unref)(gtk2_white_pixbuf);
 971             (*fp_g_object_unref)(gtk2_black_pixbuf);
 972         }
 973 
 974         gtk2_white_pixmap = (*fp_gdk_pixmap_new)(gtk2_window->window, width, height, -1);
 975         gtk2_black_pixmap = (*fp_gdk_pixmap_new)(gtk2_window->window, width, height, -1);
 976 
 977         gtk2_white_pixbuf = white;
 978         gtk2_black_pixbuf = black;
 979 
 980         gtk2_pixbuf_width = width;
 981         gtk2_pixbuf_height = height;
 982     }
 983 
 984     /* clear the pixmaps */
 985     gc = (*fp_gdk_gc_new)(gtk2_white_pixmap);
 986     (*fp_gdk_rgb_gc_set_foreground)(gc, 0xffffff);
 987     (*fp_gdk_draw_rectangle)(gtk2_white_pixmap, gc, TRUE, 0, 0, width, height);
 988     (*fp_g_object_unref)(gc);
 989 
 990     gc = (*fp_gdk_gc_new)(gtk2_black_pixmap);
 991     (*fp_gdk_rgb_gc_set_foreground)(gc, 0x000000);
 992     (*fp_gdk_draw_rectangle)(gtk2_black_pixmap, gc, TRUE, 0, 0, width, height);
 993     (*fp_g_object_unref)(gc);
 994 }
 995 
 996 /*
 997  * Restore image from white and black pixmaps and copy it into destination
 998  * buffer. This method compares two pixbufs taken from white and black
 999  * pixmaps and decodes color and alpha components. Pixbufs are RGB without
1000  * alpha, destination buffer is ABGR.
1001  *
1002  * The return value is the transparency type of the resulting image, either
1003  * one of java_awt_Transparency_OPAQUE, java_awt_Transparency_BITMASK, and
1004  * java_awt_Transparency_TRANSLUCENT.
1005  */
1006 static gint gtk2_copy_image(gint *dst, gint width, gint height)
1007 {
1008     gint i, j, r, g, b;
1009     guchar *white, *black;
1010     gint stride, padding;
1011     gboolean is_opaque = TRUE;
1012     gboolean is_bitmask = TRUE;
1013 
1014     (*fp_gdk_pixbuf_get_from_drawable)(gtk2_white_pixbuf, gtk2_white_pixmap,
1015             NULL, 0, 0, 0, 0, width, height);
1016     (*fp_gdk_pixbuf_get_from_drawable)(gtk2_black_pixbuf, gtk2_black_pixmap,
1017             NULL, 0, 0, 0, 0, width, height);
1018 
1019     white = (*fp_gdk_pixbuf_get_pixels)(gtk2_white_pixbuf);
1020     black = (*fp_gdk_pixbuf_get_pixels)(gtk2_black_pixbuf);
1021     stride = (*fp_gdk_pixbuf_get_rowstride)(gtk2_black_pixbuf);
1022     padding = stride - width * 4;
1023 
1024     for (i = 0; i < height; i++) {
1025         for (j = 0; j < width; j++) {
1026             int r1 = *white++;
1027             int r2 = *black++;
1028             int alpha = 0xff + r2 - r1;
1029 
1030             switch (alpha) {
1031                 case 0:       /* transparent pixel */
1032                     r = g = b = 0;
1033                     black += 3;
1034                     white += 3;
1035                     is_opaque = FALSE;
1036                     break;
1037 
1038                 case 0xff:    /* opaque pixel */
1039                     r = r2;
1040                     g = *black++;
1041                     b = *black++;
1042                     black++;
1043                     white += 3;
1044                     break;
1045 
1046                 default:      /* translucent pixel */
1047                     r = 0xff * r2 / alpha;
1048                     g = 0xff * *black++ / alpha;
1049                     b = 0xff * *black++ / alpha;
1050                     black++;
1051                     white += 3;
1052                     is_opaque = FALSE;
1053                     is_bitmask = FALSE;
1054                     break;
1055             }
1056 
1057             *dst++ = (alpha << 24 | r << 16 | g << 8 | b);
1058         }
1059 
1060         white += padding;
1061         black += padding;
1062     }
1063     return is_opaque ? java_awt_Transparency_OPAQUE :
1064                        (is_bitmask ? java_awt_Transparency_BITMASK :
1065                                      java_awt_Transparency_TRANSLUCENT);
1066 }
1067 
1068 static void
1069 gtk2_set_direction(GtkWidget *widget, GtkTextDirection dir)
1070 {
1071     /*
1072      * Some engines (inexplicably) look at the direction of the widget's
1073      * parent, so we need to set the direction of both the widget and its
1074      * parent.
1075      */
1076     (*fp_gtk_widget_set_direction)(widget, dir);
1077     if (widget->parent != NULL) {
1078         (*fp_gtk_widget_set_direction)(widget->parent, dir);
1079     }
1080 }
1081 
1082 /*
1083  * Initializes the widget to correct state for some engines.
1084  * This is a pure empirical method.
1085  */
1086 static void init_toggle_widget(WidgetType widget_type, gint synth_state)
1087 {
1088     gboolean is_active = ((synth_state & SELECTED) != 0);
1089 
1090     if (widget_type == RADIO_BUTTON ||
1091         widget_type == CHECK_BOX ||
1092         widget_type == TOGGLE_BUTTON) {
1093         ((GtkToggleButton*)gtk2_widget)->active = is_active;
1094     }
1095 
1096     if ((synth_state & FOCUSED) != 0) {
1097         ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_FOCUS;
1098     } else {
1099         ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_FOCUS;
1100     }
1101 
1102     if ((synth_state & MOUSE_OVER) != 0 && (synth_state & PRESSED) == 0 ||
1103            (synth_state & FOCUSED) != 0 && (synth_state & PRESSED) != 0) {
1104         gtk2_widget->state = GTK_STATE_PRELIGHT;
1105     } else if ((synth_state & DISABLED) != 0) {
1106         gtk2_widget->state = GTK_STATE_INSENSITIVE;
1107     } else {
1108         gtk2_widget->state = is_active ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL;
1109     }
1110 }
1111 
1112 /* GTK state_type filter */
1113 static GtkStateType get_gtk_state_type(WidgetType widget_type, gint synth_state)
1114 {
1115     GtkStateType result = GTK_STATE_NORMAL;
1116 
1117     if ((synth_state & DISABLED) != 0) {
1118         result = GTK_STATE_INSENSITIVE;
1119     } else if ((synth_state & PRESSED) != 0) {
1120         result = GTK_STATE_ACTIVE;
1121     } else if ((synth_state & MOUSE_OVER) != 0) {
1122         result = GTK_STATE_PRELIGHT;
1123     }
1124     return result;
1125 }
1126 
1127 /* GTK shadow_type filter */
1128 static GtkShadowType get_gtk_shadow_type(WidgetType widget_type, gint synth_state)
1129 {
1130     GtkShadowType result = GTK_SHADOW_OUT;
1131 
1132     if ((synth_state & SELECTED) != 0) {
1133         result = GTK_SHADOW_IN;
1134     }
1135     return result;
1136 }
1137 
1138 
1139 static GtkWidget* gtk2_get_arrow(GtkArrowType arrow_type, GtkShadowType shadow_type)
1140 {
1141     GtkWidget *arrow = NULL;
1142     if (NULL == gtk2_widgets[_GTK_ARROW_TYPE])
1143     {
1144         gtk2_widgets[_GTK_ARROW_TYPE] = (*fp_gtk_arrow_new)(arrow_type, shadow_type);
1145         (*fp_gtk_container_add)((GtkContainer *)gtk2_fixed, gtk2_widgets[_GTK_ARROW_TYPE]);
1146         (*fp_gtk_widget_realize)(gtk2_widgets[_GTK_ARROW_TYPE]);
1147     }
1148     arrow = gtk2_widgets[_GTK_ARROW_TYPE];
1149 
1150     (*fp_gtk_arrow_set)(arrow, arrow_type, shadow_type);
1151     return arrow;
1152 }
1153 
1154 static GtkAdjustment* create_adjustment()
1155 {
1156     return (GtkAdjustment *)
1157             (*fp_gtk_adjustment_new)(50.0, 0.0, 100.0, 10.0, 20.0, 20.0);
1158 }
1159 
1160 /**
1161  * Returns a pointer to the cached native widget for the specified widget
1162  * type.
1163  */
1164 static GtkWidget *gtk2_get_widget(WidgetType widget_type)
1165 {
1166     gboolean init_result = FALSE;
1167     GtkWidget *result = NULL;
1168     switch (widget_type)
1169     {
1170         case BUTTON:
1171         case TABLE_HEADER:
1172             if (init_result = (NULL == gtk2_widgets[_GTK_BUTTON_TYPE]))
1173             {
1174                 gtk2_widgets[_GTK_BUTTON_TYPE] = (*fp_gtk_button_new)();
1175             }
1176             result = gtk2_widgets[_GTK_BUTTON_TYPE];
1177             break;
1178         case CHECK_BOX:
1179             if (init_result = (NULL == gtk2_widgets[_GTK_CHECK_BUTTON_TYPE]))
1180             {
1181                 gtk2_widgets[_GTK_CHECK_BUTTON_TYPE] =
1182                     (*fp_gtk_check_button_new)();
1183             }
1184             result = gtk2_widgets[_GTK_CHECK_BUTTON_TYPE];
1185             break;
1186         case CHECK_BOX_MENU_ITEM:
1187             if (init_result = (NULL == gtk2_widgets[_GTK_CHECK_MENU_ITEM_TYPE]))
1188             {
1189                 gtk2_widgets[_GTK_CHECK_MENU_ITEM_TYPE] =
1190                     (*fp_gtk_check_menu_item_new)();
1191             }
1192             result = gtk2_widgets[_GTK_CHECK_MENU_ITEM_TYPE];
1193             break;
1194         /************************************************************
1195          *    Creation a dedicated color chooser is dangerous because
1196          * it deadlocks the EDT
1197          ************************************************************/
1198 /*        case COLOR_CHOOSER:
1199             if (init_result =
1200                     (NULL == gtk2_widgets[_GTK_COLOR_SELECTION_DIALOG_TYPE]))
1201             {
1202                 gtk2_widgets[_GTK_COLOR_SELECTION_DIALOG_TYPE] =
1203                     (*fp_gtk_color_selection_dialog_new)(NULL);
1204             }
1205             result = gtk2_widgets[_GTK_COLOR_SELECTION_DIALOG_TYPE];
1206             break;*/
1207         case COMBO_BOX:
1208             if (init_result = (NULL == gtk2_widgets[_GTK_COMBO_BOX_TYPE]))
1209             {
1210                 gtk2_widgets[_GTK_COMBO_BOX_TYPE] =
1211                     (*fp_gtk_combo_box_new)();
1212             }
1213             result = gtk2_widgets[_GTK_COMBO_BOX_TYPE];
1214             break;
1215         case COMBO_BOX_ARROW_BUTTON:
1216             if (init_result =
1217                     (NULL == gtk2_widgets[_GTK_COMBO_BOX_ARROW_BUTTON_TYPE]))
1218             {
1219                 gtk2_widgets[_GTK_COMBO_BOX_ARROW_BUTTON_TYPE] =
1220                      (*fp_gtk_toggle_button_new)();
1221             }
1222             result = gtk2_widgets[_GTK_COMBO_BOX_ARROW_BUTTON_TYPE];
1223             break;
1224         case COMBO_BOX_TEXT_FIELD:
1225             if (init_result =
1226                     (NULL == gtk2_widgets[_GTK_COMBO_BOX_TEXT_FIELD_TYPE]))
1227             {
1228                 result = gtk2_widgets[_GTK_COMBO_BOX_TEXT_FIELD_TYPE] =
1229                      (*fp_gtk_entry_new)();
1230             }
1231             result = gtk2_widgets[_GTK_COMBO_BOX_TEXT_FIELD_TYPE];
1232             break;
1233         case DESKTOP_ICON:
1234         case INTERNAL_FRAME_TITLE_PANE:
1235         case LABEL:
1236             if (init_result = (NULL == gtk2_widgets[_GTK_LABEL_TYPE]))
1237             {
1238                 gtk2_widgets[_GTK_LABEL_TYPE] =
1239                     (*fp_gtk_label_new)(NULL);
1240             }
1241             result = gtk2_widgets[_GTK_LABEL_TYPE];
1242             break;
1243         case DESKTOP_PANE:
1244         case PANEL:
1245         case ROOT_PANE:
1246             if (init_result = (NULL == gtk2_widgets[_GTK_CONTAINER_TYPE]))
1247             {
1248                 /* There is no constructor for a container type.  I've
1249                  * chosen GtkFixed container since it has a default
1250                  * constructor.
1251                  */
1252                 gtk2_widgets[_GTK_CONTAINER_TYPE] =
1253                     (*fp_gtk_fixed_new)();
1254             }
1255             result = gtk2_widgets[_GTK_CONTAINER_TYPE];
1256             break;
1257         case EDITOR_PANE:
1258         case TEXT_AREA:
1259         case TEXT_PANE:
1260             if (init_result = (NULL == gtk2_widgets[_GTK_TEXT_VIEW_TYPE]))
1261             {
1262                 gtk2_widgets[_GTK_TEXT_VIEW_TYPE] =
1263                     (*fp_gtk_text_view_new)();
1264             }
1265             result = gtk2_widgets[_GTK_TEXT_VIEW_TYPE];
1266             break;
1267         case FORMATTED_TEXT_FIELD:
1268         case PASSWORD_FIELD:
1269         case TEXT_FIELD:
1270             if (init_result = (NULL == gtk2_widgets[_GTK_ENTRY_TYPE]))
1271             {
1272                 gtk2_widgets[_GTK_ENTRY_TYPE] =
1273                     (*fp_gtk_entry_new)();
1274             }
1275             result = gtk2_widgets[_GTK_ENTRY_TYPE];
1276             break;
1277         case HANDLE_BOX:
1278             if (init_result = (NULL == gtk2_widgets[_GTK_HANDLE_BOX_TYPE]))
1279             {
1280                 gtk2_widgets[_GTK_HANDLE_BOX_TYPE] =
1281                     (*fp_gtk_handle_box_new)();
1282             }
1283             result = gtk2_widgets[_GTK_HANDLE_BOX_TYPE];
1284             break;
1285         case HSCROLL_BAR:
1286         case HSCROLL_BAR_BUTTON_LEFT:
1287         case HSCROLL_BAR_BUTTON_RIGHT:
1288         case HSCROLL_BAR_TRACK:
1289         case HSCROLL_BAR_THUMB:
1290             if (init_result = (NULL == gtk2_widgets[_GTK_HSCROLLBAR_TYPE]))
1291             {
1292                 gtk2_widgets[_GTK_HSCROLLBAR_TYPE] =
1293                     (*fp_gtk_hscrollbar_new)(create_adjustment());
1294             }
1295             result = gtk2_widgets[_GTK_HSCROLLBAR_TYPE];
1296             break;
1297         case HSEPARATOR:
1298             if (init_result = (NULL == gtk2_widgets[_GTK_HSEPARATOR_TYPE]))
1299             {
1300                 gtk2_widgets[_GTK_HSEPARATOR_TYPE] =
1301                     (*fp_gtk_hseparator_new)();
1302             }
1303             result = gtk2_widgets[_GTK_HSEPARATOR_TYPE];
1304             break;
1305         case HSLIDER:
1306         case HSLIDER_THUMB:
1307         case HSLIDER_TRACK:
1308             if (init_result = (NULL == gtk2_widgets[_GTK_HSCALE_TYPE]))
1309             {
1310                 gtk2_widgets[_GTK_HSCALE_TYPE] =
1311                     (*fp_gtk_hscale_new)(NULL);
1312             }
1313             result = gtk2_widgets[_GTK_HSCALE_TYPE];
1314             break;
1315         case HSPLIT_PANE_DIVIDER:
1316         case SPLIT_PANE:
1317             if (init_result = (NULL == gtk2_widgets[_GTK_HPANED_TYPE]))
1318             {
1319                 gtk2_widgets[_GTK_HPANED_TYPE] = (*fp_gtk_hpaned_new)();
1320             }
1321             result = gtk2_widgets[_GTK_HPANED_TYPE];
1322             break;
1323         case IMAGE:
1324             if (init_result = (NULL == gtk2_widgets[_GTK_IMAGE_TYPE]))
1325             {
1326                 gtk2_widgets[_GTK_IMAGE_TYPE] = (*fp_gtk_image_new)();
1327             }
1328             result = gtk2_widgets[_GTK_IMAGE_TYPE];
1329             break;
1330         case INTERNAL_FRAME:
1331             if (init_result = (NULL == gtk2_widgets[_GTK_WINDOW_TYPE]))
1332             {
1333                 gtk2_widgets[_GTK_WINDOW_TYPE] =
1334                     (*fp_gtk_window_new)(GTK_WINDOW_TOPLEVEL);
1335             }
1336             result = gtk2_widgets[_GTK_WINDOW_TYPE];
1337             break;
1338         case TOOL_TIP:
1339             if (init_result = (NULL == gtk2_widgets[_GTK_TOOLTIP_TYPE]))
1340             {
1341                 result = (*fp_gtk_window_new)(GTK_WINDOW_TOPLEVEL);
1342                 (*fp_gtk_widget_set_name)(result, "gtk-tooltips");
1343                 gtk2_widgets[_GTK_TOOLTIP_TYPE] = result;
1344             }
1345             result = gtk2_widgets[_GTK_TOOLTIP_TYPE];
1346             break;
1347         case LIST:
1348         case TABLE:
1349         case TREE:
1350         case TREE_CELL:
1351             if (init_result = (NULL == gtk2_widgets[_GTK_TREE_VIEW_TYPE]))
1352             {
1353                 gtk2_widgets[_GTK_TREE_VIEW_TYPE] =
1354                     (*fp_gtk_tree_view_new)();
1355             }
1356             result = gtk2_widgets[_GTK_TREE_VIEW_TYPE];
1357             break;
1358         case TITLED_BORDER:
1359             if (init_result = (NULL == gtk2_widgets[_GTK_FRAME_TYPE]))
1360             {
1361                 gtk2_widgets[_GTK_FRAME_TYPE] = fp_gtk_frame_new(NULL);
1362             }
1363             result = gtk2_widgets[_GTK_FRAME_TYPE];
1364             break;
1365         case POPUP_MENU:
1366             if (init_result = (NULL == gtk2_widgets[_GTK_MENU_TYPE]))
1367             {
1368                 gtk2_widgets[_GTK_MENU_TYPE] =
1369                     (*fp_gtk_menu_new)();
1370             }
1371             result = gtk2_widgets[_GTK_MENU_TYPE];
1372             break;
1373         case MENU:
1374         case MENU_ITEM:
1375         case MENU_ITEM_ACCELERATOR:
1376             if (init_result = (NULL == gtk2_widgets[_GTK_MENU_ITEM_TYPE]))
1377             {
1378                 gtk2_widgets[_GTK_MENU_ITEM_TYPE] =
1379                     (*fp_gtk_menu_item_new)();
1380             }
1381             result = gtk2_widgets[_GTK_MENU_ITEM_TYPE];
1382             break;
1383         case MENU_BAR:
1384             if (init_result = (NULL == gtk2_widgets[_GTK_MENU_BAR_TYPE]))
1385             {
1386                 gtk2_widgets[_GTK_MENU_BAR_TYPE] =
1387                     (*fp_gtk_menu_bar_new)();
1388             }
1389             result = gtk2_widgets[_GTK_MENU_BAR_TYPE];
1390             break;
1391         case COLOR_CHOOSER:
1392         case OPTION_PANE:
1393             if (init_result = (NULL == gtk2_widgets[_GTK_DIALOG_TYPE]))
1394             {
1395                 gtk2_widgets[_GTK_DIALOG_TYPE] =
1396                     (*fp_gtk_dialog_new)();
1397             }
1398             result = gtk2_widgets[_GTK_DIALOG_TYPE];
1399             break;
1400         case POPUP_MENU_SEPARATOR:
1401             if (init_result =
1402                     (NULL == gtk2_widgets[_GTK_SEPARATOR_MENU_ITEM_TYPE]))
1403             {
1404                 gtk2_widgets[_GTK_SEPARATOR_MENU_ITEM_TYPE] =
1405                     (*fp_gtk_separator_menu_item_new)();
1406             }
1407             result = gtk2_widgets[_GTK_SEPARATOR_MENU_ITEM_TYPE];
1408             break;
1409         case HPROGRESS_BAR:
1410             if (init_result = (NULL == gtk2_widgets[_GTK_HPROGRESS_BAR_TYPE]))
1411             {
1412                 gtk2_widgets[_GTK_HPROGRESS_BAR_TYPE] =
1413                     (*fp_gtk_progress_bar_new)();
1414             }
1415             result = gtk2_widgets[_GTK_HPROGRESS_BAR_TYPE];
1416             break;
1417         case VPROGRESS_BAR:
1418             if (init_result = (NULL == gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE]))
1419             {
1420                 gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE] =
1421                     (*fp_gtk_progress_bar_new)();
1422                 /*
1423                  * Vertical JProgressBars always go bottom-to-top,
1424                  * regardless of the ComponentOrientation.
1425                  */
1426                 (*fp_gtk_progress_bar_set_orientation)(
1427                     (GtkProgressBar *)gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE],
1428                     GTK_PROGRESS_BOTTOM_TO_TOP);
1429             }
1430             result = gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE];
1431             break;
1432         case RADIO_BUTTON:
1433             if (init_result = (NULL == gtk2_widgets[_GTK_RADIO_BUTTON_TYPE]))
1434             {
1435                 gtk2_widgets[_GTK_RADIO_BUTTON_TYPE] =
1436                     (*fp_gtk_radio_button_new)(NULL);
1437             }
1438             result = gtk2_widgets[_GTK_RADIO_BUTTON_TYPE];
1439             break;
1440         case RADIO_BUTTON_MENU_ITEM:
1441             if (init_result =
1442                     (NULL == gtk2_widgets[_GTK_RADIO_MENU_ITEM_TYPE]))
1443             {
1444                 gtk2_widgets[_GTK_RADIO_MENU_ITEM_TYPE] =
1445                     (*fp_gtk_radio_menu_item_new)(NULL);
1446             }
1447             result = gtk2_widgets[_GTK_RADIO_MENU_ITEM_TYPE];
1448             break;
1449         case SCROLL_PANE:
1450             if (init_result =
1451                     (NULL == gtk2_widgets[_GTK_SCROLLED_WINDOW_TYPE]))
1452             {
1453                 gtk2_widgets[_GTK_SCROLLED_WINDOW_TYPE] =
1454                     (*fp_gtk_scrolled_window_new)(NULL, NULL);
1455             }
1456             result = gtk2_widgets[_GTK_SCROLLED_WINDOW_TYPE];
1457             break;
1458         case SPINNER:
1459         case SPINNER_ARROW_BUTTON:
1460         case SPINNER_TEXT_FIELD:
1461             if (init_result = (NULL == gtk2_widgets[_GTK_SPIN_BUTTON_TYPE]))
1462             {
1463                 result = gtk2_widgets[_GTK_SPIN_BUTTON_TYPE] =
1464                     (*fp_gtk_spin_button_new)(NULL, 0, 0);
1465             }
1466             result = gtk2_widgets[_GTK_SPIN_BUTTON_TYPE];
1467             break;
1468         case TABBED_PANE:
1469         case TABBED_PANE_TAB_AREA:
1470         case TABBED_PANE_CONTENT:
1471         case TABBED_PANE_TAB:
1472             if (init_result = (NULL == gtk2_widgets[_GTK_NOTEBOOK_TYPE]))
1473             {
1474                 gtk2_widgets[_GTK_NOTEBOOK_TYPE] =
1475                     (*fp_gtk_notebook_new)(NULL);
1476             }
1477             result = gtk2_widgets[_GTK_NOTEBOOK_TYPE];
1478             break;
1479         case TOGGLE_BUTTON:
1480             if (init_result = (NULL == gtk2_widgets[_GTK_TOGGLE_BUTTON_TYPE]))
1481             {
1482                 gtk2_widgets[_GTK_TOGGLE_BUTTON_TYPE] =
1483                     (*fp_gtk_toggle_button_new)(NULL);
1484             }
1485             result = gtk2_widgets[_GTK_TOGGLE_BUTTON_TYPE];
1486             break;
1487         case TOOL_BAR:
1488         case TOOL_BAR_DRAG_WINDOW:
1489             if (init_result = (NULL == gtk2_widgets[_GTK_TOOLBAR_TYPE]))
1490             {
1491                 gtk2_widgets[_GTK_TOOLBAR_TYPE] =
1492                     (*fp_gtk_toolbar_new)(NULL);
1493             }
1494             result = gtk2_widgets[_GTK_TOOLBAR_TYPE];
1495             break;
1496         case TOOL_BAR_SEPARATOR:
1497             if (init_result =
1498                     (NULL == gtk2_widgets[_GTK_SEPARATOR_TOOL_ITEM_TYPE]))
1499             {
1500                 gtk2_widgets[_GTK_SEPARATOR_TOOL_ITEM_TYPE] =
1501                     (*fp_gtk_separator_tool_item_new)();
1502             }
1503             result = gtk2_widgets[_GTK_SEPARATOR_TOOL_ITEM_TYPE];
1504             break;
1505         case VIEWPORT:
1506             if (init_result = (NULL == gtk2_widgets[_GTK_VIEWPORT_TYPE]))
1507             {
1508                 GtkAdjustment *adjustment = create_adjustment();
1509                 gtk2_widgets[_GTK_VIEWPORT_TYPE] =
1510                     (*fp_gtk_viewport_new)(adjustment, adjustment);
1511             }
1512             result = gtk2_widgets[_GTK_VIEWPORT_TYPE];
1513             break;
1514         case VSCROLL_BAR:
1515         case VSCROLL_BAR_BUTTON_UP:
1516         case VSCROLL_BAR_BUTTON_DOWN:
1517         case VSCROLL_BAR_TRACK:
1518         case VSCROLL_BAR_THUMB:
1519             if (init_result = (NULL == gtk2_widgets[_GTK_VSCROLLBAR_TYPE]))
1520             {
1521                 gtk2_widgets[_GTK_VSCROLLBAR_TYPE] =
1522                     (*fp_gtk_vscrollbar_new)(create_adjustment());
1523             }
1524             result = gtk2_widgets[_GTK_VSCROLLBAR_TYPE];
1525             break;
1526         case VSEPARATOR:
1527             if (init_result = (NULL == gtk2_widgets[_GTK_VSEPARATOR_TYPE]))
1528             {
1529                 gtk2_widgets[_GTK_VSEPARATOR_TYPE] =
1530                     (*fp_gtk_vseparator_new)();
1531             }
1532             result = gtk2_widgets[_GTK_VSEPARATOR_TYPE];
1533             break;
1534         case VSLIDER:
1535         case VSLIDER_THUMB:
1536         case VSLIDER_TRACK:
1537             if (init_result = (NULL == gtk2_widgets[_GTK_VSCALE_TYPE]))
1538             {
1539                 gtk2_widgets[_GTK_VSCALE_TYPE] =
1540                     (*fp_gtk_vscale_new)(NULL);
1541             }
1542             result = gtk2_widgets[_GTK_VSCALE_TYPE];
1543             /*
1544              * Vertical JSliders start at the bottom, while vertical
1545              * GtkVScale widgets start at the top (by default), so to fix
1546              * this we set the "inverted" flag to get the Swing behavior.
1547              */
1548             ((GtkRange*)result)->inverted = 1;
1549             break;
1550         case VSPLIT_PANE_DIVIDER:
1551             if (init_result = (NULL == gtk2_widgets[_GTK_VPANED_TYPE]))
1552             {
1553                 gtk2_widgets[_GTK_VPANED_TYPE] = (*fp_gtk_vpaned_new)();
1554             }
1555             result = gtk2_widgets[_GTK_VPANED_TYPE];
1556             break;
1557         default:
1558             result = NULL;
1559             break;
1560     }
1561 
1562     if (result != NULL && init_result)
1563     {
1564         if (widget_type == RADIO_BUTTON_MENU_ITEM ||
1565                 widget_type == CHECK_BOX_MENU_ITEM ||
1566                 widget_type == MENU_ITEM ||
1567                 widget_type == MENU ||
1568                 widget_type == POPUP_MENU_SEPARATOR)
1569         {
1570             GtkWidget *menu = gtk2_get_widget(POPUP_MENU);
1571             (*fp_gtk_menu_shell_append)((GtkMenuShell *)menu, result);
1572         }
1573         else if (widget_type == POPUP_MENU)
1574         {
1575             GtkWidget *menu_bar = gtk2_get_widget(MENU_BAR);
1576             GtkWidget *root_menu = (*fp_gtk_menu_item_new)();
1577             (*fp_gtk_menu_item_set_submenu)((GtkMenuItem*)root_menu, result);
1578             (*fp_gtk_menu_shell_append)((GtkMenuShell *)menu_bar, root_menu);
1579         }
1580         else if (widget_type == COMBO_BOX_ARROW_BUTTON ||
1581                  widget_type == COMBO_BOX_TEXT_FIELD)
1582         {
1583             /*
1584             * We add a regular GtkButton/GtkEntry to a GtkComboBoxEntry
1585             * in order to trick engines into thinking it's a real combobox
1586             * arrow button/text field.
1587             */
1588             GtkWidget *combo = (*fp_gtk_combo_box_entry_new)();
1589 
1590             if (new_combo && widget_type == COMBO_BOX_ARROW_BUTTON) {
1591                 (*fp_gtk_widget_set_parent)(result, combo);
1592                 ((GtkBin*)combo)->child = result;
1593             } else {
1594                 (*fp_gtk_container_add)((GtkContainer *)combo, result);
1595             }
1596             (*fp_gtk_container_add)((GtkContainer *)gtk2_fixed, combo);
1597         }
1598         else if (widget_type != TOOL_TIP &&
1599                  widget_type != INTERNAL_FRAME &&
1600                  widget_type != OPTION_PANE)
1601         {
1602             (*fp_gtk_container_add)((GtkContainer *)gtk2_fixed, result);
1603         }
1604         (*fp_gtk_widget_realize)(result);
1605     }
1606     return result;
1607 }
1608 
1609 void gtk2_paint_arrow(WidgetType widget_type, GtkStateType state_type,
1610         GtkShadowType shadow_type, const gchar *detail,
1611         gint x, gint y, gint width, gint height,
1612         GtkArrowType arrow_type, gboolean fill)
1613 {
1614     static int w, h;
1615     static GtkRequisition size;
1616 
1617     if (widget_type == COMBO_BOX_ARROW_BUTTON || widget_type == TABLE)
1618         gtk2_widget = gtk2_get_arrow(arrow_type, shadow_type);
1619     else
1620         gtk2_widget = gtk2_get_widget(widget_type);
1621 
1622     switch (widget_type)
1623     {
1624         case SPINNER_ARROW_BUTTON:
1625             x = 1;
1626             y = ((arrow_type == GTK_ARROW_UP) ? 2 : 0);
1627             height -= 2;
1628             width -= 3;
1629 
1630             w = width / 2;
1631             w -= w % 2 - 1;
1632             h = (w + 1) / 2;
1633             break;
1634 
1635         case HSCROLL_BAR_BUTTON_LEFT:
1636         case HSCROLL_BAR_BUTTON_RIGHT:
1637         case VSCROLL_BAR_BUTTON_UP:
1638         case VSCROLL_BAR_BUTTON_DOWN:
1639             w = width / 2;
1640             h = height / 2;
1641             break;
1642 
1643         case COMBO_BOX_ARROW_BUTTON:
1644         case TABLE:
1645             x = 1;
1646             (*fp_gtk_widget_size_request)(gtk2_widget, &size);
1647             w = size.width - ((GtkMisc*)gtk2_widget)->xpad * 2;
1648             h = size.height - ((GtkMisc*)gtk2_widget)->ypad * 2;
1649             w = h = MIN(MIN(w, h), MIN(width,height)) * 0.7;
1650             break;
1651 
1652         default:
1653             w = width;
1654             h = height;
1655             break;
1656     }
1657     x += (width - w) / 2;
1658     y += (height - h) / 2;
1659 
1660     (*fp_gtk_paint_arrow)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1661             shadow_type, NULL, gtk2_widget, detail, arrow_type, fill,
1662             x, y, w, h);
1663     (*fp_gtk_paint_arrow)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1664             shadow_type, NULL, gtk2_widget, detail, arrow_type, fill,
1665             x, y, w, h);
1666 }
1667 
1668 static void gtk2_paint_box(WidgetType widget_type, GtkStateType state_type,
1669                     GtkShadowType shadow_type, const gchar *detail,
1670                     gint x, gint y, gint width, gint height,
1671                     gint synth_state, GtkTextDirection dir)
1672 {
1673     gtk2_widget = gtk2_get_widget(widget_type);
1674 
1675     /*
1676      * The clearlooks engine sometimes looks at the widget's state field
1677      * instead of just the state_type variable that we pass in, so to account
1678      * for those cases we set the widget's state field accordingly.  The
1679      * flags field is similarly important for things like focus/default state.
1680      */
1681     gtk2_widget->state = state_type;
1682 
1683     if (widget_type == HSLIDER_TRACK) {
1684         /*
1685          * For horizontal JSliders with right-to-left orientation, we need
1686          * to set the "inverted" flag to match the native GTK behavior where
1687          * the foreground highlight is on the right side of the slider thumb.
1688          * This is needed especially for the ubuntulooks engine, which looks
1689          * exclusively at the "inverted" flag to determine on which side of
1690          * the thumb to paint the highlight...
1691          */
1692         ((GtkRange*)gtk2_widget)->inverted = (dir == GTK_TEXT_DIR_RTL);
1693 
1694         /*
1695          * Note however that other engines like clearlooks will look at both
1696          * the "inverted" field and the text direction to determine how
1697          * the foreground highlight is painted:
1698          *     !inverted && ltr --> paint highlight on left side
1699          *     !inverted && rtl --> paint highlight on right side
1700          *      inverted && ltr --> paint highlight on right side
1701          *      inverted && rtl --> paint highlight on left side
1702          * So the only way to reliably get the desired results for horizontal
1703          * JSlider (i.e., highlight on left side for LTR ComponentOrientation
1704          * and highlight on right side for RTL ComponentOrientation) is to
1705          * always override text direction as LTR, and then set the "inverted"
1706          * flag accordingly (as we have done above).
1707          */
1708         dir = GTK_TEXT_DIR_LTR;
1709     }
1710 
1711     /*
1712      * Some engines (e.g. clearlooks) will paint the shadow of certain
1713      * widgets (e.g. COMBO_BOX_ARROW_BUTTON) differently depending on the
1714      * the text direction.
1715      */
1716     gtk2_set_direction(gtk2_widget, dir);
1717 
1718     switch (widget_type) {
1719     case BUTTON:
1720         if (synth_state & DEFAULT) {
1721             ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_DEFAULT;
1722         } else {
1723             ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_DEFAULT;
1724         }
1725         break;
1726     case TOGGLE_BUTTON:
1727         init_toggle_widget(widget_type, synth_state);
1728         break;
1729     case HSCROLL_BAR_BUTTON_LEFT:
1730         /*
1731          * The clearlooks engine will draw a "left" button when:
1732          *   x == w->allocation.x
1733          *
1734          * The ubuntulooks engine will draw a "left" button when:
1735          *   [x,y,width,height]
1736          *     intersects
1737          *   [w->alloc.x,w->alloc.y,width,height]
1738          *
1739          * The values that are set below should ensure that a "left"
1740          * button is rendered for both of these (and other) engines.
1741          */
1742         gtk2_widget->allocation.x = x;
1743         gtk2_widget->allocation.y = y;
1744         gtk2_widget->allocation.width = width;
1745         gtk2_widget->allocation.height = height;
1746         break;
1747     case HSCROLL_BAR_BUTTON_RIGHT:
1748         /*
1749          * The clearlooks engine will draw a "right" button when:
1750          *   x + width == w->allocation.x + w->allocation.width
1751          *
1752          * The ubuntulooks engine will draw a "right" button when:
1753          *   [x,y,width,height]
1754          *     does not intersect
1755          *   [w->alloc.x,w->alloc.y,width,height]
1756          *     but does intersect
1757          *   [w->alloc.x+width,w->alloc.y,width,height]
1758          *
1759          * The values that are set below should ensure that a "right"
1760          * button is rendered for both of these (and other) engines.
1761          */
1762         gtk2_widget->allocation.x = x+width;
1763         gtk2_widget->allocation.y = 0;
1764         gtk2_widget->allocation.width = 0;
1765         gtk2_widget->allocation.height = height;
1766         break;
1767     case VSCROLL_BAR_BUTTON_UP:
1768         /*
1769          * The clearlooks engine will draw an "up" button when:
1770          *   y == w->allocation.y
1771          *
1772          * The ubuntulooks engine will draw an "up" button when:
1773          *   [x,y,width,height]
1774          *     intersects
1775          *   [w->alloc.x,w->alloc.y,width,height]
1776          *
1777          * The values that are set below should ensure that an "up"
1778          * button is rendered for both of these (and other) engines.
1779          */
1780         gtk2_widget->allocation.x = x;
1781         gtk2_widget->allocation.y = y;
1782         gtk2_widget->allocation.width = width;
1783         gtk2_widget->allocation.height = height;
1784         break;
1785     case VSCROLL_BAR_BUTTON_DOWN:
1786         /*
1787          * The clearlooks engine will draw a "down" button when:
1788          *   y + height == w->allocation.y + w->allocation.height
1789          *
1790          * The ubuntulooks engine will draw a "down" button when:
1791          *   [x,y,width,height]
1792          *     does not intersect
1793          *   [w->alloc.x,w->alloc.y,width,height]
1794          *     but does intersect
1795          *   [w->alloc.x,w->alloc.y+height,width,height]
1796          *
1797          * The values that are set below should ensure that a "down"
1798          * button is rendered for both of these (and other) engines.
1799          */
1800         gtk2_widget->allocation.x = x;
1801         gtk2_widget->allocation.y = y+height;
1802         gtk2_widget->allocation.width = width;
1803         gtk2_widget->allocation.height = 0;
1804         break;
1805     default:
1806         break;
1807     }
1808 
1809     (*fp_gtk_paint_box)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1810             shadow_type, NULL, gtk2_widget, detail, x, y, width, height);
1811     (*fp_gtk_paint_box)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1812             shadow_type, NULL, gtk2_widget, detail, x, y, width, height);
1813 
1814     /*
1815      * Reset the text direction to the default value so that we don't
1816      * accidentally affect other operations and widgets.
1817      */
1818     gtk2_set_direction(gtk2_widget, GTK_TEXT_DIR_LTR);
1819 }
1820 
1821 void gtk2_paint_box_gap(WidgetType widget_type, GtkStateType state_type,
1822         GtkShadowType shadow_type, const gchar *detail,
1823         gint x, gint y, gint width, gint height,
1824         GtkPositionType gap_side, gint gap_x, gint gap_width)
1825 {
1826     /* Clearlooks needs a real clip area to paint the gap properly */
1827     GdkRectangle area = { x, y, width, height };
1828 
1829     gtk2_widget = gtk2_get_widget(widget_type);
1830     (*fp_gtk_paint_box_gap)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1831             shadow_type, &area, gtk2_widget, detail,
1832             x, y, width, height, gap_side, gap_x, gap_width);
1833     (*fp_gtk_paint_box_gap)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1834             shadow_type, &area, gtk2_widget, detail,
1835             x, y, width, height, gap_side, gap_x, gap_width);
1836 }
1837 
1838 static void gtk2_paint_check(WidgetType widget_type, gint synth_state,
1839         const gchar *detail, gint x, gint y, gint width, gint height)
1840 {
1841     GtkStateType state_type = get_gtk_state_type(widget_type, synth_state);
1842     GtkShadowType shadow_type = get_gtk_shadow_type(widget_type, synth_state);
1843 
1844     gtk2_widget = gtk2_get_widget(widget_type);
1845     init_toggle_widget(widget_type, synth_state);
1846 
1847     (*fp_gtk_paint_check)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1848             shadow_type, NULL, gtk2_widget, detail,
1849             x, y, width, height);
1850     (*fp_gtk_paint_check)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1851             shadow_type, NULL, gtk2_widget, detail,
1852             x, y, width, height);
1853 }
1854 
1855 static void gtk2_paint_diamond(WidgetType widget_type, GtkStateType state_type,
1856         GtkShadowType shadow_type, const gchar *detail,
1857         gint x, gint y, gint width, gint height)
1858 {
1859     gtk2_widget = gtk2_get_widget(widget_type);
1860     (*fp_gtk_paint_diamond)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1861             shadow_type, NULL, gtk2_widget, detail,
1862             x, y, width, height);
1863     (*fp_gtk_paint_diamond)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1864             shadow_type, NULL, gtk2_widget, detail,
1865             x, y, width, height);
1866 }
1867 
1868 static void gtk2_paint_expander(WidgetType widget_type, GtkStateType state_type,
1869         const gchar *detail, gint x, gint y, gint width, gint height,
1870         GtkExpanderStyle expander_style)
1871 {
1872     gtk2_widget = gtk2_get_widget(widget_type);
1873     (*fp_gtk_paint_expander)(gtk2_widget->style, gtk2_white_pixmap,
1874             state_type, NULL, gtk2_widget, detail,
1875             x + width / 2, y + height / 2, expander_style);
1876     (*fp_gtk_paint_expander)(gtk2_widget->style, gtk2_black_pixmap,
1877             state_type, NULL, gtk2_widget, detail,
1878             x + width / 2, y + height / 2, expander_style);
1879 }
1880 
1881 static void gtk2_paint_extension(WidgetType widget_type, GtkStateType state_type,
1882         GtkShadowType shadow_type, const gchar *detail,
1883         gint x, gint y, gint width, gint height, GtkPositionType gap_side)
1884 {
1885     gtk2_widget = gtk2_get_widget(widget_type);
1886     (*fp_gtk_paint_extension)(gtk2_widget->style, gtk2_white_pixmap,
1887             state_type, shadow_type, NULL, gtk2_widget, detail,
1888             x, y, width, height, gap_side);
1889     (*fp_gtk_paint_extension)(gtk2_widget->style, gtk2_black_pixmap,
1890             state_type, shadow_type, NULL, gtk2_widget, detail,
1891             x, y, width, height, gap_side);
1892 }
1893 
1894 static void gtk2_paint_flat_box(WidgetType widget_type, GtkStateType state_type,
1895         GtkShadowType shadow_type, const gchar *detail,
1896         gint x, gint y, gint width, gint height, gboolean has_focus)
1897 {
1898     gtk2_widget = gtk2_get_widget(widget_type);
1899 
1900     if (has_focus)
1901         ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_FOCUS;
1902     else
1903         ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_FOCUS;
1904 
1905     (*fp_gtk_paint_flat_box)(gtk2_widget->style, gtk2_white_pixmap,
1906             state_type, shadow_type, NULL, gtk2_widget, detail,
1907             x, y, width, height);
1908     (*fp_gtk_paint_flat_box)(gtk2_widget->style, gtk2_black_pixmap,
1909             state_type, shadow_type, NULL, gtk2_widget, detail,
1910             x, y, width, height);
1911 }
1912 
1913 static void gtk2_paint_focus(WidgetType widget_type, GtkStateType state_type,
1914         const char *detail, gint x, gint y, gint width, gint height)
1915 {
1916     gtk2_widget = gtk2_get_widget(widget_type);
1917     (*fp_gtk_paint_focus)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1918             NULL, gtk2_widget, detail, x, y, width, height);
1919     (*fp_gtk_paint_focus)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1920             NULL, gtk2_widget, detail, x, y, width, height);
1921 }
1922 
1923 static void gtk2_paint_handle(WidgetType widget_type, GtkStateType state_type,
1924         GtkShadowType shadow_type, const gchar *detail,
1925         gint x, gint y, gint width, gint height, GtkOrientation orientation)
1926 {
1927     gtk2_widget = gtk2_get_widget(widget_type);
1928     (*fp_gtk_paint_handle)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1929             shadow_type, NULL, gtk2_widget, detail,
1930             x, y, width, height, orientation);
1931     (*fp_gtk_paint_handle)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1932             shadow_type, NULL, gtk2_widget, detail,
1933             x, y, width, height, orientation);
1934 }
1935 
1936 static void gtk2_paint_hline(WidgetType widget_type, GtkStateType state_type,
1937         const gchar *detail, gint x, gint y, gint width, gint height)
1938 {
1939     gtk2_widget = gtk2_get_widget(widget_type);
1940     (*fp_gtk_paint_hline)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1941             NULL, gtk2_widget, detail, x, x + width, y);
1942     (*fp_gtk_paint_hline)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1943             NULL, gtk2_widget, detail, x, x + width, y);
1944 }
1945 
1946 static void gtk2_paint_option(WidgetType widget_type, gint synth_state,
1947         const gchar *detail, gint x, gint y, gint width, gint height)
1948 {
1949     GtkStateType state_type = get_gtk_state_type(widget_type, synth_state);
1950     GtkShadowType shadow_type = get_gtk_shadow_type(widget_type, synth_state);
1951 
1952     gtk2_widget = gtk2_get_widget(widget_type);
1953     init_toggle_widget(widget_type, synth_state);
1954 
1955     (*fp_gtk_paint_option)(gtk2_widget->style, gtk2_white_pixmap, state_type,
1956             shadow_type, NULL, gtk2_widget, detail,
1957             x, y, width, height);
1958     (*fp_gtk_paint_option)(gtk2_widget->style, gtk2_black_pixmap, state_type,
1959             shadow_type, NULL, gtk2_widget, detail,
1960             x, y, width, height);
1961 }
1962 
1963 static void gtk2_paint_shadow(WidgetType widget_type, GtkStateType state_type,
1964                        GtkShadowType shadow_type, const gchar *detail,
1965                        gint x, gint y, gint width, gint height,
1966                        gint synth_state, GtkTextDirection dir)
1967 {
1968     gtk2_widget = gtk2_get_widget(widget_type);
1969 
1970     /*
1971      * The clearlooks engine sometimes looks at the widget's state field
1972      * instead of just the state_type variable that we pass in, so to account
1973      * for those cases we set the widget's state field accordingly.  The
1974      * flags field is similarly important for things like focus state.
1975      */
1976     gtk2_widget->state = state_type;
1977 
1978     /*
1979      * Some engines (e.g. clearlooks) will paint the shadow of certain
1980      * widgets (e.g. COMBO_BOX_TEXT_FIELD) differently depending on the
1981      * the text direction.
1982      */
1983     gtk2_set_direction(gtk2_widget, dir);
1984 
1985     switch (widget_type) {
1986     case COMBO_BOX_TEXT_FIELD:
1987     case FORMATTED_TEXT_FIELD:
1988     case PASSWORD_FIELD:
1989     case SPINNER_TEXT_FIELD:
1990     case TEXT_FIELD:
1991         if (synth_state & FOCUSED) {
1992             ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_FOCUS;
1993         } else {
1994             ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_FOCUS;
1995         }
1996         break;
1997     default:
1998         break;
1999     }
2000 
2001     (*fp_gtk_paint_shadow)(gtk2_widget->style, gtk2_white_pixmap, state_type,
2002             shadow_type, NULL, gtk2_widget, detail, x, y, width, height);
2003     (*fp_gtk_paint_shadow)(gtk2_widget->style, gtk2_black_pixmap, state_type,
2004             shadow_type, NULL, gtk2_widget, detail, x, y, width, height);
2005 
2006     /*
2007      * Reset the text direction to the default value so that we don't
2008      * accidentally affect other operations and widgets.
2009      */
2010     gtk2_set_direction(gtk2_widget, GTK_TEXT_DIR_LTR);
2011 }
2012 
2013 static void gtk2_paint_slider(WidgetType widget_type, GtkStateType state_type,
2014         GtkShadowType shadow_type, const gchar *detail,
2015         gint x, gint y, gint width, gint height, GtkOrientation orientation,
2016         gboolean has_focus)
2017 {
2018     gtk2_widget = gtk2_get_widget(widget_type);
2019     (*fp_gtk_paint_slider)(gtk2_widget->style, gtk2_white_pixmap, state_type,
2020             shadow_type, NULL, gtk2_widget, detail,
2021             x, y, width, height, orientation);
2022     (*fp_gtk_paint_slider)(gtk2_widget->style, gtk2_black_pixmap, state_type,
2023             shadow_type, NULL, gtk2_widget, detail,
2024             x, y, width, height, orientation);
2025 }
2026 
2027 static void gtk2_paint_vline(WidgetType widget_type, GtkStateType state_type,
2028         const gchar *detail, gint x, gint y, gint width, gint height)
2029 {
2030     gtk2_widget = gtk2_get_widget(widget_type);
2031     (*fp_gtk_paint_vline)(gtk2_widget->style, gtk2_white_pixmap, state_type,
2032             NULL, gtk2_widget, detail, y, y + height, x);
2033     (*fp_gtk_paint_vline)(gtk2_widget->style, gtk2_black_pixmap, state_type,
2034             NULL, gtk2_widget, detail, y, y + height, x);
2035 }
2036 
2037 static void gtk_paint_background(WidgetType widget_type, GtkStateType state_type,
2038         gint x, gint y, gint width, gint height)
2039 {
2040     gtk2_widget = gtk2_get_widget(widget_type);
2041     (*fp_gtk_style_apply_default_background)(gtk2_widget->style,
2042             gtk2_white_pixmap, TRUE, state_type, NULL, x, y, width, height);
2043     (*fp_gtk_style_apply_default_background)(gtk2_widget->style,
2044             gtk2_black_pixmap, TRUE, state_type, NULL, x, y, width, height);
2045 }
2046 
2047 static GdkPixbuf *gtk2_get_stock_icon(gint widget_type, const gchar *stock_id,
2048         GtkIconSize size, GtkTextDirection direction, const char *detail)
2049 {
2050     init_containers();
2051     gtk2_widget = gtk2_get_widget((widget_type < 0) ? IMAGE : widget_type);
2052     gtk2_widget->state = GTK_STATE_NORMAL;
2053     (*fp_gtk_widget_set_direction)(gtk2_widget, direction);
2054     return (*fp_gtk_widget_render_icon)(gtk2_widget, stock_id, size, detail);
2055 }
2056 
2057 static jboolean gtk2_get_pixbuf_data(JNIEnv *env, GdkPixbuf* pixbuf,
2058                               jmethodID icon_upcall_method, jobject this) {
2059     if (!pixbuf) {
2060         return JNI_FALSE;
2061     }
2062     guchar *pixbuf_data = (*fp_gdk_pixbuf_get_pixels)(pixbuf);
2063     if (pixbuf_data) {
2064         int row_stride = (*fp_gdk_pixbuf_get_rowstride)(pixbuf);
2065         int width = (*fp_gdk_pixbuf_get_width)(pixbuf);
2066         int height = (*fp_gdk_pixbuf_get_height)(pixbuf);
2067         int bps = (*fp_gdk_pixbuf_get_bits_per_sample)(pixbuf);
2068         int channels = (*fp_gdk_pixbuf_get_n_channels)(pixbuf);
2069         gboolean alpha = (*fp_gdk_pixbuf_get_has_alpha)(pixbuf);
2070 
2071         jbyteArray data = (*env)->NewByteArray(env, (row_stride * height));
2072         JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE);
2073 
2074         (*env)->SetByteArrayRegion(env, data, 0, (row_stride * height),
2075                                    (jbyte *)pixbuf_data);
2076         (*fp_g_object_unref)(pixbuf);
2077 
2078         /* Call the callback method to create the image on the Java side. */
2079         (*env)->CallVoidMethod(env, this, icon_upcall_method, data,
2080                 width, height, row_stride, bps, channels, alpha);
2081         return JNI_TRUE;
2082     }
2083     return JNI_FALSE;
2084 }
2085 
2086 static jboolean gtk2_get_file_icon_data(JNIEnv *env, const char *filename,
2087                  GError **error, jmethodID icon_upcall_method, jobject this) {
2088     GdkPixbuf* pixbuf = fp_gdk_pixbuf_new_from_file(filename, error);
2089     return gtk2_get_pixbuf_data(env, pixbuf, icon_upcall_method, this);
2090 }
2091 
2092 static jboolean gtk2_get_icon_data(JNIEnv *env, gint widget_type,
2093                               const gchar *stock_id, GtkIconSize size,
2094                               GtkTextDirection direction, const char *detail,
2095                               jmethodID icon_upcall_method, jobject this) {
2096     GdkPixbuf* pixbuf = gtk2_get_stock_icon(widget_type, stock_id, size,
2097                                        direction, detail);
2098     return gtk2_get_pixbuf_data(env, pixbuf, icon_upcall_method, this);
2099 }
2100 
2101 /*************************************************/
2102 static gint gtk2_get_xthickness(JNIEnv *env, WidgetType widget_type)
2103 {
2104     init_containers();
2105 
2106     gtk2_widget = gtk2_get_widget(widget_type);
2107     GtkStyle* style = gtk2_widget->style;
2108     return style->xthickness;
2109 }
2110 
2111 static gint gtk2_get_ythickness(JNIEnv *env, WidgetType widget_type)
2112 {
2113     init_containers();
2114 
2115     gtk2_widget = gtk2_get_widget(widget_type);
2116     GtkStyle* style = gtk2_widget->style;
2117     return style->ythickness;
2118 }
2119 
2120 /*************************************************/
2121 static guint8 recode_color(guint16 channel)
2122 {
2123     return (guint8)(channel>>8);
2124 }
2125 
2126 static gint gtk2_get_color_for_state(JNIEnv *env, WidgetType widget_type,
2127                               GtkStateType state_type, ColorType color_type)
2128 {
2129     gint result = 0;
2130     GdkColor *color = NULL;
2131 
2132     init_containers();
2133 
2134     gtk2_widget = gtk2_get_widget(widget_type);
2135     GtkStyle* style = gtk2_widget->style;
2136 
2137     switch (color_type)
2138     {
2139         case FOREGROUND:
2140             color = &(style->fg[state_type]);
2141             break;
2142         case BACKGROUND:
2143             color = &(style->bg[state_type]);
2144             break;
2145         case TEXT_FOREGROUND:
2146             color = &(style->text[state_type]);
2147             break;
2148         case TEXT_BACKGROUND:
2149             color = &(style->base[state_type]);
2150             break;
2151         case LIGHT:
2152             color = &(style->light[state_type]);
2153             break;
2154         case DARK:
2155             color = &(style->dark[state_type]);
2156             break;
2157         case MID:
2158             color = &(style->mid[state_type]);
2159             break;
2160         case FOCUS:
2161         case BLACK:
2162             color = &(style->black);
2163             break;
2164         case WHITE:
2165             color = &(style->white);
2166             break;
2167     }
2168 
2169     if (color)
2170         result = recode_color(color->red)   << 16 |
2171                  recode_color(color->green) << 8  |
2172                  recode_color(color->blue);
2173 
2174     return result;
2175 }
2176 
2177 /*************************************************/
2178 static jobject create_Boolean(JNIEnv *env, jboolean boolean_value);
2179 static jobject create_Integer(JNIEnv *env, jint int_value);
2180 static jobject create_Long(JNIEnv *env, jlong long_value);
2181 static jobject create_Float(JNIEnv *env, jfloat float_value);
2182 static jobject create_Double(JNIEnv *env, jdouble double_value);
2183 static jobject create_Character(JNIEnv *env, jchar char_value);
2184 static jobject create_Insets(JNIEnv *env, GtkBorder *border);
2185 
2186 static jobject gtk2_get_class_value(JNIEnv *env, WidgetType widget_type,
2187                               const char* key)
2188 {
2189     init_containers();
2190 
2191     gtk2_widget = gtk2_get_widget(widget_type);
2192 
2193     GValue value;
2194     value.g_type = 0;
2195 
2196     GParamSpec* param = (*fp_gtk_widget_class_find_style_property)(
2197                                     ((GTypeInstance*)gtk2_widget)->g_class, key);
2198     if( param )
2199     {
2200         (*fp_g_value_init)( &value, param->value_type );
2201         (*fp_gtk_widget_style_get_property)(gtk2_widget, key, &value);
2202 
2203         if( (*fp_g_type_is_a)( param->value_type, G_TYPE_BOOLEAN ))
2204         {
2205             gboolean val = (*fp_g_value_get_boolean)(&value);
2206             return create_Boolean(env, (jboolean)val);
2207         }
2208         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_CHAR ))
2209         {
2210             gchar val = (*fp_g_value_get_char)(&value);
2211             return create_Character(env, (jchar)val);
2212         }
2213         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_UCHAR ))
2214         {
2215             guchar val = (*fp_g_value_get_uchar)(&value);
2216             return create_Character(env, (jchar)val);
2217         }
2218         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_INT ))
2219         {
2220             gint val = (*fp_g_value_get_int)(&value);
2221             return create_Integer(env, (jint)val);
2222         }
2223         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_UINT ))
2224         {
2225             guint val = (*fp_g_value_get_uint)(&value);
2226             return create_Integer(env, (jint)val);
2227         }
2228         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_LONG ))
2229         {
2230             glong val = (*fp_g_value_get_long)(&value);
2231             return create_Long(env, (jlong)val);
2232         }
2233         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_ULONG ))
2234         {
2235             gulong val = (*fp_g_value_get_ulong)(&value);
2236             return create_Long(env, (jlong)val);
2237         }
2238         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_INT64 ))
2239         {
2240             gint64 val = (*fp_g_value_get_int64)(&value);
2241             return create_Long(env, (jlong)val);
2242         }
2243         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_UINT64 ))
2244         {
2245             guint64 val = (*fp_g_value_get_uint64)(&value);
2246             return create_Long(env, (jlong)val);
2247         }
2248         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_FLOAT ))
2249         {
2250             gfloat val = (*fp_g_value_get_float)(&value);
2251             return create_Float(env, (jfloat)val);
2252         }
2253         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_DOUBLE ))
2254         {
2255             gdouble val = (*fp_g_value_get_double)(&value);
2256             return create_Double(env, (jdouble)val);
2257         }
2258         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_ENUM ))
2259         {
2260             gint val = (*fp_g_value_get_enum)(&value);
2261             return create_Integer(env, (jint)val);
2262         }
2263         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_FLAGS ))
2264         {
2265             guint val = (*fp_g_value_get_flags)(&value);
2266             return create_Integer(env, (jint)val);
2267         }
2268         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_STRING ))
2269         {
2270             const gchar* val = (*fp_g_value_get_string)(&value);
2271 
2272             /* We suppose that all values come in C locale and
2273              * utf-8 representation of a string is the same as
2274              * the string itself. If this isn't so we should
2275              * use g_convert.
2276              */
2277             return (*env)->NewStringUTF(env, val);
2278         }
2279         else if( (*fp_g_type_is_a)( param->value_type, GTK_TYPE_BORDER ))
2280         {
2281             GtkBorder *border = (GtkBorder*)(*fp_g_value_get_boxed)(&value);
2282             return border ? create_Insets(env, border) : NULL;
2283         }
2284 
2285         /*      TODO: Other types are not supported yet.*/
2286 /*        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_PARAM ))
2287         {
2288             GParamSpec* val = (*fp_g_value_get_param)(&value);
2289             printf( "Param: %p\n", val );
2290         }
2291         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_BOXED ))
2292         {
2293             gpointer* val = (*fp_g_value_get_boxed)(&value);
2294             printf( "Boxed: %p\n", val );
2295         }
2296         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_POINTER ))
2297         {
2298             gpointer* val = (*fp_g_value_get_pointer)(&value);
2299             printf( "Pointer: %p\n", val );
2300         }
2301         else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_OBJECT ))
2302         {
2303             GObject* val = (GObject*)(*fp_g_value_get_object)(&value);
2304             printf( "Object: %p\n", val );
2305         }*/
2306     }
2307 
2308     return NULL;
2309 }
2310 
2311 static void gtk2_set_range_value(WidgetType widget_type, jdouble value,
2312                           jdouble min, jdouble max, jdouble visible)
2313 {
2314     GtkAdjustment *adj;
2315 
2316     gtk2_widget = gtk2_get_widget(widget_type);
2317 
2318     adj = (*fp_gtk_range_get_adjustment)((GtkRange *)gtk2_widget);
2319     adj->value = (gdouble)value;
2320     adj->lower = (gdouble)min;
2321     adj->upper = (gdouble)max;
2322     adj->page_size = (gdouble)visible;
2323 }
2324 
2325 /*************************************************/
2326 static jobject create_Object(JNIEnv *env, jmethodID *cid,
2327                              const char* class_name,
2328                              const char* signature,
2329                              jvalue* value)
2330 {
2331     jclass  class;
2332     jobject result;
2333 
2334     class = (*env)->FindClass(env, class_name);
2335     if( class == NULL )
2336         return NULL; /* can't find/load the class, exception thrown */
2337 
2338     if( *cid == NULL)
2339     {
2340         *cid = (*env)->GetMethodID(env, class, "<init>", signature);
2341         if( *cid == NULL )
2342         {
2343             (*env)->DeleteLocalRef(env, class);
2344             return NULL; /* can't find/get the method, exception thrown */
2345         }
2346     }
2347 
2348     result = (*env)->NewObjectA(env, class, *cid, value);
2349 
2350     (*env)->DeleteLocalRef(env, class);
2351     return result;
2352 }
2353 
2354 jobject create_Boolean(JNIEnv *env, jboolean boolean_value)
2355 {
2356     static jmethodID cid = NULL;
2357     jvalue value;
2358 
2359     value.z = boolean_value;
2360 
2361     return create_Object(env, &cid, "java/lang/Boolean", "(Z)V", &value);
2362 }
2363 
2364 jobject create_Integer(JNIEnv *env, jint int_value)
2365 {
2366     static jmethodID cid = NULL;
2367     jvalue value;
2368 
2369     value.i = int_value;
2370 
2371     return create_Object(env, &cid, "java/lang/Integer", "(I)V", &value);
2372 }
2373 
2374 jobject create_Long(JNIEnv *env, jlong long_value)
2375 {
2376     static jmethodID cid = NULL;
2377     jvalue value;
2378 
2379     value.j = long_value;
2380 
2381     return create_Object(env, &cid, "java/lang/Long", "(J)V", &value);
2382 }
2383 
2384 jobject create_Float(JNIEnv *env, jfloat float_value)
2385 {
2386     static jmethodID cid = NULL;
2387     jvalue value;
2388 
2389     value.f = float_value;
2390 
2391     return create_Object(env, &cid, "java/lang/Float", "(F)V", &value);
2392 }
2393 
2394 jobject create_Double(JNIEnv *env, jdouble double_value)
2395 {
2396     static jmethodID cid = NULL;
2397     jvalue value;
2398 
2399     value.d = double_value;
2400 
2401     return create_Object(env, &cid, "java/lang/Double", "(D)V", &value);
2402 }
2403 
2404 jobject create_Character(JNIEnv *env, jchar char_value)
2405 {
2406     static jmethodID cid = NULL;
2407     jvalue value;
2408 
2409     value.c = char_value;
2410 
2411     return create_Object(env, &cid, "java/lang/Character", "(C)V", &value);
2412 }
2413 
2414 
2415 jobject create_Insets(JNIEnv *env, GtkBorder *border)
2416 {
2417     static jmethodID cid = NULL;
2418     jvalue values[4];
2419 
2420     values[0].i = border->top;
2421     values[1].i = border->left;
2422     values[2].i = border->bottom;
2423     values[3].i = border->right;
2424 
2425     return create_Object(env, &cid, "java/awt/Insets", "(IIII)V", values);
2426 }
2427 
2428 /*********************************************/
2429 static jstring gtk2_get_pango_font_name(JNIEnv *env, WidgetType widget_type)
2430 {
2431     init_containers();
2432 
2433     gtk2_widget = gtk2_get_widget(widget_type);
2434     jstring  result = NULL;
2435     GtkStyle* style = gtk2_widget->style;
2436 
2437     if (style && style->font_desc)
2438     {
2439         gchar* val = (*fp_pango_font_description_to_string)(style->font_desc);
2440         result = (*env)->NewStringUTF(env, val);
2441         (*fp_g_free)( val );
2442     }
2443 
2444     return result;
2445 }
2446 
2447 /***********************************************/
2448 static jobject get_string_property(JNIEnv *env, GtkSettings* settings, const gchar* key)
2449 {
2450     jobject result = NULL;
2451     gchar*  strval = NULL;
2452 
2453     (*fp_g_object_get)(settings, key, &strval, NULL);
2454     result = (*env)->NewStringUTF(env, strval);
2455     (*fp_g_free)(strval);
2456 
2457     return result;
2458 }
2459 
2460 static jobject get_integer_property(JNIEnv *env, GtkSettings* settings, const gchar* key)
2461 {
2462     gint intval = NULL;
2463     (*fp_g_object_get)(settings, key, &intval, NULL);
2464     return create_Integer(env, intval);
2465 }
2466 
2467 static jobject get_boolean_property(JNIEnv *env, GtkSettings* settings, const gchar* key)
2468 {
2469     gint intval = NULL;
2470     (*fp_g_object_get)(settings, key, &intval, NULL);
2471     return create_Boolean(env, intval);
2472 }
2473 
2474 static jobject gtk2_get_setting(JNIEnv *env, Setting property)
2475 {
2476     GtkSettings* settings = (*fp_gtk_settings_get_default)();
2477 
2478     switch (property)
2479     {
2480         case GTK_FONT_NAME:
2481             return get_string_property(env, settings, "gtk-font-name");
2482         case GTK_ICON_SIZES:
2483             return get_string_property(env, settings, "gtk-icon-sizes");
2484         case GTK_CURSOR_BLINK:
2485             return get_boolean_property(env, settings, "gtk-cursor-blink");
2486         case GTK_CURSOR_BLINK_TIME:
2487             return get_integer_property(env, settings, "gtk-cursor-blink-time");
2488     }
2489 
2490     return NULL;
2491 }
2492 
2493 static gboolean gtk2_get_drawable_data(JNIEnv *env, jintArray pixelArray, jint x,
2494      jint y, jint width, jint height, jint jwidth, int dx, int dy, jint scale) {
2495     GdkPixbuf *pixbuf;
2496     jint *ary;
2497 
2498     GdkWindow *root = (*fp_gdk_get_default_root_window)();
2499 
2500     pixbuf = (*fp_gdk_pixbuf_get_from_drawable)(NULL, root, NULL, x, y,
2501                                                     0, 0, width, height);
2502     if (pixbuf && scale != 1) {
2503         GdkPixbuf *scaledPixbuf;
2504         x /= scale;
2505         y /= scale;
2506         width /= scale;
2507         height /= scale;
2508         dx /= scale;
2509         dy /= scale;
2510         scaledPixbuf = (*fp_gdk_pixbuf_scale_simple)(pixbuf, width, height,
2511                                                      GDK_INTERP_BILINEAR);
2512         (*fp_g_object_unref)(pixbuf);
2513         pixbuf = scaledPixbuf;
2514     }
2515 
2516     if (pixbuf) {
2517         int nchan = (*fp_gdk_pixbuf_get_n_channels)(pixbuf);
2518         int stride = (*fp_gdk_pixbuf_get_rowstride)(pixbuf);
2519 
2520         if ((*fp_gdk_pixbuf_get_width)(pixbuf) == width
2521                 && (*fp_gdk_pixbuf_get_height)(pixbuf) == height
2522                 && (*fp_gdk_pixbuf_get_bits_per_sample)(pixbuf) == 8
2523                 && (*fp_gdk_pixbuf_get_colorspace)(pixbuf) == GDK_COLORSPACE_RGB
2524                 && nchan >= 3
2525                 ) {
2526             guchar *p, *pix = (*fp_gdk_pixbuf_get_pixels)(pixbuf);
2527 
2528             ary = (*env)->GetPrimitiveArrayCritical(env, pixelArray, NULL);
2529             if (ary) {
2530                 jint _x, _y;
2531                 int index;
2532                 for (_y = 0; _y < height; _y++) {
2533                     for (_x = 0; _x < width; _x++) {
2534                         p = pix + _y * stride + _x * nchan;
2535 
2536                         index = (_y + dy) * jwidth + (_x + dx);
2537                         ary[index] = 0xff000000
2538                                         | (p[0] << 16)
2539                                         | (p[1] << 8)
2540                                         | (p[2]);
2541 
2542                     }
2543                 }
2544                 (*env)->ReleasePrimitiveArrayCritical(env, pixelArray, ary, 0);
2545             }
2546         }
2547         (*fp_g_object_unref)(pixbuf);
2548     }
2549     return JNI_FALSE;
2550 }
2551 
2552 static GdkWindow* gtk2_get_window(void *widget) {
2553     return ((GtkWidget*)widget)->window;
2554 }
2555 
2556 void gtk2_init(GtkApi* gtk) {
2557     gtk->version = GTK_2;
2558 
2559     gtk->show_uri_load = &gtk2_show_uri_load;
2560     gtk->unload = &gtk2_unload;
2561     gtk->flush_event_loop = &flush_gtk_event_loop;
2562     gtk->gtk_check_version = fp_gtk_check_version;
2563     gtk->get_setting = &gtk2_get_setting;
2564 
2565     gtk->paint_arrow = &gtk2_paint_arrow;
2566     gtk->paint_box = &gtk2_paint_box;
2567     gtk->paint_box_gap = &gtk2_paint_box_gap;
2568     gtk->paint_expander = &gtk2_paint_expander;
2569     gtk->paint_extension = &gtk2_paint_extension;
2570     gtk->paint_flat_box = &gtk2_paint_flat_box;
2571     gtk->paint_focus = &gtk2_paint_focus;
2572     gtk->paint_handle = &gtk2_paint_handle;
2573     gtk->paint_hline = &gtk2_paint_hline;
2574     gtk->paint_vline = &gtk2_paint_vline;
2575     gtk->paint_option = &gtk2_paint_option;
2576     gtk->paint_shadow = &gtk2_paint_shadow;
2577     gtk->paint_slider = &gtk2_paint_slider;
2578     gtk->paint_background = &gtk_paint_background;
2579     gtk->paint_check = &gtk2_paint_check;
2580     gtk->set_range_value = &gtk2_set_range_value;
2581 
2582     gtk->init_painting = &gtk2_init_painting;
2583     gtk->copy_image = &gtk2_copy_image;
2584 
2585     gtk->get_xthickness = &gtk2_get_xthickness;
2586     gtk->get_ythickness = &gtk2_get_ythickness;
2587     gtk->get_color_for_state = &gtk2_get_color_for_state;
2588     gtk->get_class_value = &gtk2_get_class_value;
2589 
2590     gtk->get_pango_font_name = &gtk2_get_pango_font_name;
2591     gtk->get_icon_data = &gtk2_get_icon_data;
2592     gtk->get_file_icon_data = &gtk2_get_file_icon_data;
2593     gtk->gdk_threads_enter = fp_gdk_threads_enter;
2594     gtk->gdk_threads_leave = fp_gdk_threads_leave;
2595     gtk->gtk_show_uri = fp_gtk_show_uri;
2596     gtk->get_drawable_data = &gtk2_get_drawable_data;
2597     gtk->g_free = fp_g_free;
2598 
2599     gtk->gtk_file_chooser_get_filename = fp_gtk_file_chooser_get_filename;
2600     gtk->gtk_widget_hide = fp_gtk_widget_hide;
2601     gtk->gtk_main_quit = fp_gtk_main_quit;
2602     gtk->gtk_file_chooser_dialog_new = fp_gtk_file_chooser_dialog_new;
2603     gtk->gtk_file_chooser_set_current_folder =
2604                           fp_gtk_file_chooser_set_current_folder;
2605     gtk->gtk_file_chooser_set_filename = fp_gtk_file_chooser_set_filename;
2606     gtk->gtk_file_chooser_set_current_name =
2607                           fp_gtk_file_chooser_set_current_name;
2608     gtk->gtk_file_filter_add_custom = fp_gtk_file_filter_add_custom;
2609     gtk->gtk_file_chooser_set_filter = fp_gtk_file_chooser_set_filter;
2610     gtk->gtk_file_chooser_get_type = fp_gtk_file_chooser_get_type;
2611     gtk->gtk_file_filter_new = fp_gtk_file_filter_new;
2612     gtk->gtk_file_chooser_set_do_overwrite_confirmation =
2613                           fp_gtk_file_chooser_set_do_overwrite_confirmation;
2614     gtk->gtk_file_chooser_set_select_multiple =
2615                           fp_gtk_file_chooser_set_select_multiple;
2616     gtk->gtk_file_chooser_get_current_folder =
2617                           fp_gtk_file_chooser_get_current_folder;
2618     gtk->gtk_file_chooser_get_filenames = fp_gtk_file_chooser_get_filenames;
2619     gtk->gtk_g_slist_length = fp_gtk_g_slist_length;
2620     gtk->g_signal_connect_data = fp_g_signal_connect_data;
2621     gtk->gtk_widget_show = fp_gtk_widget_show;
2622     gtk->gtk_main = fp_gtk_main;
2623     gtk->gtk_main_level = fp_gtk_main_level;
2624     gtk->g_path_get_dirname = fp_g_path_get_dirname;
2625     gtk->gdk_x11_drawable_get_xid = fp_gdk_x11_drawable_get_xid;
2626     gtk->gtk_widget_destroy = fp_gtk_widget_destroy;
2627     gtk->gtk_window_present = fp_gtk_window_present;
2628     gtk->gtk_window_move = fp_gtk_window_move;
2629     gtk->gtk_window_resize = fp_gtk_window_resize;
2630     gtk->get_window = &gtk2_get_window;
2631 
2632     gtk->g_object_unref = fp_g_object_unref;
2633     gtk->g_list_append = fp_g_list_append;
2634     gtk->g_list_free = fp_g_list_free;
2635     gtk->g_list_free_full = fp_g_list_free_full;
2636 }