Pileus Git - ~andy/gtk/blob - gtk/gtkcssstylepropertyimpl.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include "gtkstylepropertyprivate.h"
  23
  24 #include <gobject/gvaluecollector.h>
  25 #include <gdk-pixbuf/gdk-pixbuf.h>
  26 #include <cairo-gobject.h>
  27
  28 #include "gtkcssparserprivate.h"
  29 #include "gtkcssstylefuncsprivate.h"
  30 #include "gtkcssstylepropertyprivate.h"
  31 #include "gtkcsstypesprivate.h"
  32 #include "gtkintl.h"
  33 #include "gtkprivatetypebuiltins.h"
  34 #include "gtkstylepropertiesprivate.h"
  35
  36 /* the actual parsers we have */
  37 #include "gtkanimationdescription.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcssimageprivate.h"
  40 #include "gtkgradient.h"
  41 #include "gtkshadowprivate.h"
  42 #include "gtkthemingengine.h"
  43 #include "gtktypebuiltins.h"
  44 #include "gtkwin32themeprivate.h"
  45
  46 /*** REGISTRATION ***/
  47
  48 static void
  49 color_compute (GtkCssStyleProperty    *property,
  50                GValue                 *computed,
  51                GtkStyleContext        *context,
  52                const GValue           *specified)
  53 {
  54   g_value_init (computed, GDK_TYPE_RGBA);
  55
  56   /* for when resolvage fails */
  57 restart:
  58
  59   if (G_VALUE_HOLDS (specified, GTK_TYPE_CSS_SPECIAL_VALUE))
  60     {
  61       GtkStyleContext *parent = gtk_style_context_get_parent (context);
  62       g_assert (g_value_get_enum (specified) == GTK_CSS_CURRENT_COLOR);
  63
  64       if (parent)
  65         g_value_copy (_gtk_style_context_peek_property (parent, "color"), computed);
  66       else
  67         _gtk_css_style_compute_value (computed,
  68                                       context,
  69                                       _gtk_css_style_property_get_initial_value (property));
  70     }
  71   else if (G_VALUE_HOLDS (specified, GTK_TYPE_SYMBOLIC_COLOR))
  72     {
  73       GdkRGBA rgba;
  74
  75       if (!_gtk_style_context_resolve_color (context,
  76                                              g_value_get_boxed (specified),
  77                                              &rgba))
  78         {
  79           specified = _gtk_css_style_property_get_initial_value (property);
  80           goto restart;
  81         }
  82
  83       g_value_set_boxed (computed, &rgba);
  84     }
  85   else
  86     g_value_copy (specified, computed);
  87 }
  88
  89 static void
  90 _gtk_style_property_register (const char *                   name,
  91                               GType                          value_type,
  92                               GtkStylePropertyFlags          flags,
  93                               GtkCssStylePropertyParseFunc   parse_value,
  94                               GtkCssStylePropertyPrintFunc   print_value,
  95                               GtkCssStylePropertyComputeFunc compute_value,
  96                               const GValue *                 initial_value)
  97 {
  98   GtkCssStyleProperty *node;
  99
 100   node = g_object_new (GTK_TYPE_CSS_STYLE_PROPERTY,
 101                        "inherit", (flags & GTK_STYLE_PROPERTY_INHERIT) ? TRUE : FALSE,
 102                        "initial-value", initial_value,
 103                        "name", name,
 104                        "value-type", value_type,
 105                        NULL);
 106
 107   if (parse_value)
 108     node->parse_value = parse_value;
 109   if (print_value)
 110     node->print_value = print_value;
 111   if (compute_value)
 112     node->compute_value = compute_value;
 113 }
 114
 115 static void
 116 gtk_style_property_register (const char *                   name,
 117                              GType                          value_type,
 118                              GtkStylePropertyFlags          flags,
 119                              GtkCssStylePropertyParseFunc   parse_value,
 120                              GtkCssStylePropertyPrintFunc   print_value,
 121                              GtkCssStylePropertyComputeFunc compute_value,
 122                              ...)
 123 {
 124   GValue initial_value = G_VALUE_INIT;
 125   char *error = NULL;
 126   va_list args;
 127
 128   va_start (args, compute_value);
 129   G_VALUE_COLLECT_INIT (&initial_value, value_type,
 130                         args, 0, &error);
 131   if (error)
 132     {
 133       g_error ("property `%s' initial value is broken: %s", name, error);
 134       g_value_unset (&initial_value);
 135       return;
 136     }
 137
 138   va_end (args);
 139
 140   _gtk_style_property_register (name,
 141                                 value_type,
 142                                 flags,
 143                                 parse_value,
 144                                 print_value,
 145                                 compute_value,
 146                                 &initial_value);
 147
 148   g_value_unset (&initial_value);
 149 }
 150
 151 /*** HELPERS ***/
 152
 153 static void
 154 string_append_double (GString *string,
 155                       double   d)
 156 {
 157   char buf[G_ASCII_DTOSTR_BUF_SIZE];
 158
 159   g_ascii_dtostr (buf, sizeof (buf), d);
 160   g_string_append (string, buf);
 161 }
 162
 163 static void
 164 string_append_string (GString    *str,
 165                       const char *string)
 166 {
 167   gsize len;
 168
 169   g_string_append_c (str, '"');
 170
 171   do {
 172     len = strcspn (string, "\"\n\r\f");
 173     g_string_append (str, string);
 174     string += len;
 175     switch (*string)
 176       {
 177       case '\0':
 178         break;
 179       case '\n':
 180         g_string_append (str, "\\A ");
 181         break;
 182       case '\r':
 183         g_string_append (str, "\\D ");
 184         break;
 185       case '\f':
 186         g_string_append (str, "\\C ");
 187         break;
 188       case '\"':
 189         g_string_append (str, "\\\"");
 190         break;
 191       default:
 192         g_assert_not_reached ();
 193         break;
 194       }
 195   } while (*string);
 196
 197   g_string_append_c (str, '"');
 198 }
 199
 200 /*** IMPLEMENTATIONS ***/
 201
 202 static gboolean
 203 font_family_parse (GtkCssStyleProperty *property,
 204                    GValue              *value,
 205                    GtkCssParser        *parser,
 206                    GFile               *base)
 207 {
 208   GPtrArray *names;
 209   char *name;
 210
 211   /* We don't special case generic families. Pango should do
 212    * that for us */
 213
 214   names = g_ptr_array_new ();
 215
 216   do {
 217     name = _gtk_css_parser_try_ident (parser, TRUE);
 218     if (name)
 219       {
 220         GString *string = g_string_new (name);
 221         g_free (name);
 222         while ((name = _gtk_css_parser_try_ident (parser, TRUE)))
 223           {
 224             g_string_append_c (string, ' ');
 225             g_string_append (string, name);
 226             g_free (name);
 227           }
 228         name = g_string_free (string, FALSE);
 229       }
 230     else
 231       {
 232         name = _gtk_css_parser_read_string (parser);
 233         if (name == NULL)
 234           {
 235             g_ptr_array_free (names, TRUE);
 236             return FALSE;
 237           }
 238       }
 239
 240     g_ptr_array_add (names, name);
 241   } while (_gtk_css_parser_try (parser, ",", TRUE));
 242
 243   /* NULL-terminate array */
 244   g_ptr_array_add (names, NULL);
 245   g_value_set_boxed (value, g_ptr_array_free (names, FALSE));
 246   return TRUE;
 247 }
 248
 249 static void
 250 font_family_value_print (GtkCssStyleProperty *property,
 251                          const GValue        *value,
 252                          GString             *string)
 253 {
 254   const char **names = g_value_get_boxed (value);
 255
 256   if (names == NULL || *names == NULL)
 257     {
 258       g_string_append (string, "none");
 259       return;
 260     }
 261
 262   string_append_string (string, *names);
 263   names++;
 264   while (*names)
 265     {
 266       g_string_append (string, ", ");
 267       string_append_string (string, *names);
 268       names++;
 269     }
 270 }
 271
 272 static gboolean
 273 bindings_value_parse (GtkCssStyleProperty *property,
 274                       GValue              *value,
 275                       GtkCssParser        *parser,
 276                       GFile               *base)
 277 {
 278   GPtrArray *array;
 279   GtkBindingSet *binding_set;
 280   char *name;
 281
 282   array = g_ptr_array_new ();
 283
 284   do {
 285       name = _gtk_css_parser_try_ident (parser, TRUE);
 286       if (name == NULL)
 287         {
 288           _gtk_css_parser_error (parser, "Not a valid binding name");
 289           g_ptr_array_free (array, TRUE);
 290           return FALSE;
 291         }
 292
 293       binding_set = gtk_binding_set_find (name);
 294
 295       if (!binding_set)
 296         {
 297           _gtk_css_parser_error (parser, "No binding set named '%s'", name);
 298           g_free (name);
 299           continue;
 300         }
 301
 302       g_ptr_array_add (array, binding_set);
 303       g_free (name);
 304     }
 305   while (_gtk_css_parser_try (parser, ",", TRUE));
 306
 307   g_value_take_boxed (value, array);
 308
 309   return TRUE;
 310 }
 311
 312 static void
 313 bindings_value_print (GtkCssStyleProperty *property,
 314                       const GValue        *value,
 315                       GString             *string)
 316 {
 317   GPtrArray *array;
 318   guint i;
 319
 320   array = g_value_get_boxed (value);
 321
 322   for (i = 0; i < array->len; i++)
 323     {
 324       GtkBindingSet *binding_set = g_ptr_array_index (array, i);
 325
 326       if (i > 0)
 327         g_string_append (string, ", ");
 328       g_string_append (string, binding_set->set_name);
 329     }
 330 }
 331
 332 static gboolean
 333 border_corner_radius_value_parse (GtkCssStyleProperty *property,
 334                                   GValue              *value,
 335                                   GtkCssParser        *parser,
 336                                   GFile               *base)
 337 {
 338   GtkCssBorderCornerRadius corner;
 339
 340   if (!_gtk_css_parser_try_double (parser, &corner.horizontal))
 341     {
 342       _gtk_css_parser_error (parser, "Expected a number");
 343       return FALSE;
 344     }
 345   else if (corner.horizontal < 0)
 346     goto negative;
 347
 348   if (!_gtk_css_parser_try_double (parser, &corner.vertical))
 349     corner.vertical = corner.horizontal;
 350   else if (corner.vertical < 0)
 351     goto negative;
 352
 353   g_value_set_boxed (value, &corner);
 354   return TRUE;
 355
 356 negative:
 357   _gtk_css_parser_error (parser, "Border radius values cannot be negative");
 358   return FALSE;
 359 }
 360
 361 static void
 362 border_corner_radius_value_print (GtkCssStyleProperty *property,
 363                                   const GValue        *value,
 364                                   GString             *string)
 365 {
 366   GtkCssBorderCornerRadius *corner;
 367
 368   corner = g_value_get_boxed (value);
 369
 370   if (corner == NULL)
 371     {
 372       g_string_append (string, "none");
 373       return;
 374     }
 375
 376   string_append_double (string, corner->horizontal);
 377   if (corner->horizontal != corner->vertical)
 378     {
 379       g_string_append_c (string, ' ');
 380       string_append_double (string, corner->vertical);
 381     }
 382 }
 383
 384 static gboolean
 385 css_image_value_parse (GtkCssStyleProperty *property,
 386                        GValue              *value,
 387                        GtkCssParser        *parser,
 388                        GFile               *base)
 389 {
 390   GtkCssImage *image;
 391
 392   if (_gtk_css_parser_try (parser, "none", TRUE))
 393     image = NULL;
 394   else
 395     {
 396       image = _gtk_css_image_new_parse (parser, base);
 397       if (image == NULL)
 398         return FALSE;
 399     }
 400
 401   g_value_unset (value);
 402   g_value_init (value, GTK_TYPE_CSS_IMAGE);
 403   g_value_take_object (value, image);
 404   return TRUE;
 405 }
 406
 407 static void
 408 css_image_value_print (GtkCssStyleProperty *property,
 409                        const GValue        *value,
 410                        GString             *string)
 411 {
 412   GtkCssImage *image = g_value_get_object (value);
 413
 414   if (image)
 415     _gtk_css_image_print (image, string);
 416   else
 417     g_string_append (string, "none");
 418 }
 419
 420 static void
 421 css_image_value_compute (GtkCssStyleProperty    *property,
 422                          GValue                 *computed,
 423                          GtkStyleContext        *context,
 424                          const GValue           *specified)
 425 {
 426   GtkCssImage *image = g_value_get_object (specified);
 427
 428   if (image)
 429     image = _gtk_css_image_compute (image, context);
 430
 431   g_value_init (computed, GTK_TYPE_CSS_IMAGE);
 432   g_value_take_object (computed, image);
 433 }
 434
 435 /*** REGISTRATION ***/
 436
 437 #define rgba_init(rgba, r, g, b, a) G_STMT_START{ \
 438   (rgba)->red = (r); \
 439   (rgba)->green = (g); \
 440   (rgba)->blue = (b); \
 441   (rgba)->alpha = (a); \
 442 }G_STMT_END
 443 void
 444 _gtk_css_style_property_init_properties (void)
 445 {
 446   GValue value = { 0, };
 447   char *default_font_family[] = { "Sans", NULL };
 448   GdkRGBA rgba;
 449   GtkCssBorderCornerRadius no_corner_radius = { 0, };
 450   GtkBorder border_of_ones = { 1, 1, 1, 1 };
 451   GtkCssBorderImageRepeat border_image_repeat = { GTK_CSS_REPEAT_STYLE_STRETCH, GTK_CSS_REPEAT_STYLE_STRETCH };
 452
 453   /* Initialize "color" and "font-size" first,
 454    * so that when computing values later they are
 455    * done first. That way, 'currentColor' and font
 456    * sizes in em can be looked up properly */
 457   rgba_init (&rgba, 1, 1, 1, 1);
 458   gtk_style_property_register            ("color",
 459                                           GDK_TYPE_RGBA,
 460                                           GTK_STYLE_PROPERTY_INHERIT,
 461                                           NULL,
 462                                           NULL,
 463                                           color_compute,
 464                                           &rgba);
 465   gtk_style_property_register            ("font-size",
 466                                           G_TYPE_DOUBLE,
 467                                           GTK_STYLE_PROPERTY_INHERIT,
 468                                           NULL,
 469                                           NULL,
 470                                           NULL,
 471                                           10.0);
 472
 473   /* properties that aren't referenced when computing values
 474    * start here */
 475   rgba_init (&rgba, 0, 0, 0, 0);
 476   gtk_style_property_register            ("background-color",
 477                                           GDK_TYPE_RGBA,
 478                                           0,
 479                                           NULL,
 480                                           NULL,
 481                                           color_compute,
 482                                           &rgba);
 483
 484   gtk_style_property_register            ("font-family",
 485                                           G_TYPE_STRV,
 486                                           GTK_STYLE_PROPERTY_INHERIT,
 487                                           font_family_parse,
 488                                           font_family_value_print,
 489                                           NULL,
 490                                           default_font_family);
 491   gtk_style_property_register            ("font-style",
 492                                           PANGO_TYPE_STYLE,
 493                                           GTK_STYLE_PROPERTY_INHERIT,
 494                                           NULL,
 495                                           NULL,
 496                                           NULL,
 497                                           PANGO_STYLE_NORMAL);
 498   gtk_style_property_register            ("font-variant",
 499                                           PANGO_TYPE_VARIANT,
 500                                           GTK_STYLE_PROPERTY_INHERIT,
 501                                           NULL,
 502                                           NULL,
 503                                           NULL,
 504                                           PANGO_VARIANT_NORMAL);
 505   /* xxx: need to parse this properly, ie parse the numbers */
 506   gtk_style_property_register            ("font-weight",
 507                                           PANGO_TYPE_WEIGHT,
 508                                           GTK_STYLE_PROPERTY_INHERIT,
 509                                           NULL,
 510                                           NULL,
 511                                           NULL,
 512                                           PANGO_WEIGHT_NORMAL);
 513
 514   gtk_style_property_register            ("text-shadow",
 515                                           GTK_TYPE_SHADOW,
 516                                           GTK_STYLE_PROPERTY_INHERIT,
 517                                           NULL,
 518                                           NULL,
 519                                           NULL,
 520                                           NULL);
 521
 522   gtk_style_property_register            ("icon-shadow",
 523                                           GTK_TYPE_SHADOW,
 524                                           GTK_STYLE_PROPERTY_INHERIT,
 525                                           NULL,
 526                                           NULL,
 527                                           NULL,
 528                                           NULL);
 529
 530   gtk_style_property_register            ("box-shadow",
 531                                           GTK_TYPE_SHADOW,
 532                                           0,
 533                                           NULL,
 534                                           NULL,
 535                                           NULL,
 536                                           NULL);
 537
 538   gtk_style_property_register            ("margin-top",
 539                                           G_TYPE_INT,
 540                                           0,
 541                                           NULL,
 542                                           NULL,
 543                                           NULL,
 544                                           0);
 545   gtk_style_property_register            ("margin-left",
 546                                           G_TYPE_INT,
 547                                           0,
 548                                           NULL,
 549                                           NULL,
 550                                           NULL,
 551                                           0);
 552   gtk_style_property_register            ("margin-bottom",
 553                                           G_TYPE_INT,
 554                                           0,
 555                                           NULL,
 556                                           NULL,
 557                                           NULL,
 558                                           0);
 559   gtk_style_property_register            ("margin-right",
 560                                           G_TYPE_INT,
 561                                           0,
 562                                           NULL,
 563                                           NULL,
 564                                           NULL,
 565                                           0);
 566   gtk_style_property_register            ("padding-top",
 567                                           G_TYPE_INT,
 568                                           0,
 569                                           NULL,
 570                                           NULL,
 571                                           NULL,
 572                                           0);
 573   gtk_style_property_register            ("padding-left",
 574                                           G_TYPE_INT,
 575                                           0,
 576                                           NULL,
 577                                           NULL,
 578                                           NULL,
 579                                           0);
 580   gtk_style_property_register            ("padding-bottom",
 581                                           G_TYPE_INT,
 582                                           0,
 583                                           NULL,
 584                                           NULL,
 585                                           NULL,
 586                                           0);
 587   gtk_style_property_register            ("padding-right",
 588                                           G_TYPE_INT,
 589                                           0,
 590                                           NULL,
 591                                           NULL,
 592                                           NULL,
 593                                           0);
 594   gtk_style_property_register            ("border-top-width",
 595                                           G_TYPE_INT,
 596                                           0,
 597                                           NULL,
 598                                           NULL,
 599                                           NULL,
 600                                           0);
 601   gtk_style_property_register            ("border-left-width",
 602                                           G_TYPE_INT,
 603                                           0,
 604                                           NULL,
 605                                           NULL,
 606                                           NULL,
 607                                           0);
 608   gtk_style_property_register            ("border-bottom-width",
 609                                           G_TYPE_INT,
 610                                           0,
 611                                           NULL,
 612                                           NULL,
 613                                           NULL,
 614                                           0);
 615   gtk_style_property_register            ("border-right-width",
 616                                           G_TYPE_INT,
 617                                           0,
 618                                           NULL,
 619                                           NULL,
 620                                           NULL,
 621                                           0);
 622
 623   gtk_style_property_register            ("border-top-left-radius",
 624                                           GTK_TYPE_CSS_BORDER_CORNER_RADIUS,
 625                                           0,
 626                                           border_corner_radius_value_parse,
 627                                           border_corner_radius_value_print,
 628                                           NULL,
 629                                           &no_corner_radius);
 630   gtk_style_property_register            ("border-top-right-radius",
 631                                           GTK_TYPE_CSS_BORDER_CORNER_RADIUS,
 632                                           0,
 633                                           border_corner_radius_value_parse,
 634                                           border_corner_radius_value_print,
 635                                           NULL,
 636                                           &no_corner_radius);
 637   gtk_style_property_register            ("border-bottom-right-radius",
 638                                           GTK_TYPE_CSS_BORDER_CORNER_RADIUS,
 639                                           0,
 640                                           border_corner_radius_value_parse,
 641                                           border_corner_radius_value_print,
 642                                           NULL,
 643                                           &no_corner_radius);
 644   gtk_style_property_register            ("border-bottom-left-radius",
 645                                           GTK_TYPE_CSS_BORDER_CORNER_RADIUS,
 646                                           0,
 647                                           border_corner_radius_value_parse,
 648                                           border_corner_radius_value_print,
 649                                           NULL,
 650                                           &no_corner_radius);
 651
 652   gtk_style_property_register            ("border-style",
 653                                           GTK_TYPE_BORDER_STYLE,
 654                                           0,
 655                                           NULL,
 656                                           NULL,
 657                                           NULL,
 658                                           GTK_BORDER_STYLE_NONE);
 659   gtk_style_property_register            ("background-clip",
 660                                           GTK_TYPE_CSS_AREA,
 661                                           0,
 662                                           NULL,
 663                                           NULL,
 664                                           NULL,
 665                                           GTK_CSS_AREA_BORDER_BOX);
 666
 667   gtk_style_property_register            ("background-origin",
 668                                           GTK_TYPE_CSS_AREA,
 669                                           0,
 670                                           NULL,
 671                                           NULL,
 672                                           NULL,
 673                                           GTK_CSS_AREA_PADDING_BOX);
 674
 675   g_value_init (&value, GTK_TYPE_CSS_SPECIAL_VALUE);
 676   g_value_set_enum (&value, GTK_CSS_CURRENT_COLOR);
 677   _gtk_style_property_register           ("border-top-color",
 678                                           GDK_TYPE_RGBA,
 679                                           0,
 680                                           NULL,
 681                                           NULL,
 682                                           color_compute,
 683                                           &value);
 684   _gtk_style_property_register           ("border-right-color",
 685                                           GDK_TYPE_RGBA,
 686                                           0,
 687                                           NULL,
 688                                           NULL,
 689                                           color_compute,
 690                                           &value);
 691   _gtk_style_property_register           ("border-bottom-color",
 692                                           GDK_TYPE_RGBA,
 693                                           0,
 694                                           NULL,
 695                                           NULL,
 696                                           color_compute,
 697                                           &value);
 698   _gtk_style_property_register           ("border-left-color",
 699                                           GDK_TYPE_RGBA,
 700                                           0,
 701                                           NULL,
 702                                           NULL,
 703                                           color_compute,
 704                                           &value);
 705   g_value_unset (&value);
 706
 707   gtk_style_property_register            ("background-repeat",
 708                                           GTK_TYPE_CSS_BACKGROUND_REPEAT,
 709                                           0,
 710                                           NULL,
 711                                           NULL,
 712                                           NULL,
 713                                           GTK_CSS_BACKGROUND_REPEAT);
 714   g_value_init (&value, GTK_TYPE_CSS_IMAGE);
 715   _gtk_style_property_register           ("background-image",
 716                                           CAIRO_GOBJECT_TYPE_PATTERN,
 717                                           0,
 718                                           css_image_value_parse,
 719                                           css_image_value_print,
 720                                           css_image_value_compute,
 721                                           &value);
 722
 723   _gtk_style_property_register           ("border-image-source",
 724                                           CAIRO_GOBJECT_TYPE_PATTERN,
 725                                           0,
 726                                           css_image_value_parse,
 727                                           css_image_value_print,
 728                                           css_image_value_compute,
 729                                           &value);
 730   g_value_unset (&value);
 731   gtk_style_property_register            ("border-image-repeat",
 732                                           GTK_TYPE_CSS_BORDER_IMAGE_REPEAT,
 733                                           0,
 734                                           NULL,
 735                                           NULL,
 736                                           NULL,
 737                                           &border_image_repeat);
 738
 739   /* XXX: The initial vaue is wrong, it should be 100% */
 740   gtk_style_property_register            ("border-image-slice",
 741                                           GTK_TYPE_BORDER,
 742                                           0,
 743                                           NULL,
 744                                           NULL,
 745                                           NULL,
 746                                           &border_of_ones);
 747   gtk_style_property_register            ("border-image-width",
 748                                           GTK_TYPE_BORDER,
 749                                           0,
 750                                           NULL,
 751                                           NULL,
 752                                           NULL,
 753                                           NULL);
 754   gtk_style_property_register            ("engine",
 755                                           GTK_TYPE_THEMING_ENGINE,
 756                                           0,
 757                                           NULL,
 758                                           NULL,
 759                                           NULL,
 760                                           gtk_theming_engine_load (NULL));
 761   gtk_style_property_register            ("transition",
 762                                           GTK_TYPE_ANIMATION_DESCRIPTION,
 763                                           0,
 764                                           NULL,
 765                                           NULL,
 766                                           NULL,
 767                                           NULL);
 768
 769   /* Private property holding the binding sets */
 770   gtk_style_property_register            ("gtk-key-bindings",
 771                                           G_TYPE_PTR_ARRAY,
 772                                           0,
 773                                           bindings_value_parse,
 774                                           bindings_value_print,
 775                                           NULL,
 776                                           NULL);
 777 }
 778