libempathy-gtk/empathy-ui-utils.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2002-2007 Imendio AB
   4  * Copyright (C) 2007 Collabora Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  *
  21  * Authors: Mikael Hallendal <micke@imendio.com>
  22  *          Richard Hult <richard@imendio.com>
  23  *          Martyn Russell <martyn@imendio.com>
  24  *          Xavier Claessens <xclaesse@gmail.com>
  25  *
  26  *          Part of this file is copied from GtkSourceView (gtksourceiter.c):
  27  *          Paolo Maggi
  28  *          Jeroen Zwartepoorte
  29  */
  30
  31 #include <string.h>
  32 #include <X11/Xatom.h>
  33 #include <gdk/gdkx.h>
  34 #include <glib/gi18n.h>
  35 #include <gtk/gtk.h>
  36 #include <glade/glade.h>
  37 #include <libgnomevfs/gnome-vfs-utils.h>
  38
  39 #include <libmissioncontrol/mc-profile.h>
  40
  41 #include <libempathy/empathy-debug.h>
  42
  43 #include "empathy-ui-utils.h"
  44 #include "empathy-images.h"
  45
  46 #define DEBUG_DOMAIN "UiUtils"
  47
  48 struct SizeData {
  49         gint     width;
  50         gint     height;
  51         gboolean preserve_aspect_ratio;
  52 };
  53
  54 static GladeXML *
  55 get_glade_file (const gchar *filename,
  56                 const gchar *root,
  57                 const gchar *domain,
  58                 const gchar *first_required_widget,
  59                 va_list      args)
  60 {
  61         gchar      *path;
  62         GladeXML   *gui;
  63         const char *name;
  64         GtkWidget **widget_ptr;
  65
  66         path = g_build_filename (DATADIR, "empathy", filename, NULL);
  67         gui = glade_xml_new (path, root, domain);
  68         g_free (path);
  69
  70         if (!gui) {
  71                 g_warning ("Couldn't find necessary glade file '%s'", filename);
  72                 return NULL;
  73         }
  74
  75         for (name = first_required_widget; name; name = va_arg (args, char *)) {
  76                 widget_ptr = va_arg (args, void *);
  77
  78                 *widget_ptr = glade_xml_get_widget (gui, name);
  79
  80                 if (!*widget_ptr) {
  81                         g_warning ("Glade file '%s' is missing widget '%s'.",
  82                                    filename, name);
  83                         continue;
  84                 }
  85         }
  86
  87         return gui;
  88 }
  89
  90 void
  91 empathy_glade_get_file_simple (const gchar *filename,
  92                               const gchar *root,
  93                               const gchar *domain,
  94                               const gchar *first_required_widget, ...)
  95 {
  96         va_list   args;
  97         GladeXML *gui;
  98
  99         va_start (args, first_required_widget);
 100
 101         gui = get_glade_file (filename,
 102                               root,
 103                               domain,
 104                               first_required_widget,
 105                               args);
 106
 107         va_end (args);
 108
 109         if (!gui) {
 110                 return;
 111         }
 112
 113         g_object_unref (gui);
 114 }
 115
 116 GladeXML *
 117 empathy_glade_get_file (const gchar *filename,
 118                        const gchar *root,
 119                        const gchar *domain,
 120                        const gchar *first_required_widget, ...)
 121 {
 122         va_list   args;
 123         GladeXML *gui;
 124
 125         va_start (args, first_required_widget);
 126
 127         gui = get_glade_file (filename,
 128                               root,
 129                               domain,
 130                               first_required_widget,
 131                               args);
 132
 133         va_end (args);
 134
 135         if (!gui) {
 136                 return NULL;
 137         }
 138
 139         return gui;
 140 }
 141
 142 void
 143 empathy_glade_connect (GladeXML *gui,
 144                       gpointer  user_data,
 145                       gchar     *first_widget, ...)
 146 {
 147         va_list      args;
 148         const gchar *name;
 149         const gchar *signal;
 150         GtkWidget   *widget;
 151         gpointer    *callback;
 152
 153         va_start (args, first_widget);
 154
 155         for (name = first_widget; name; name = va_arg (args, char *)) {
 156                 signal = va_arg (args, void *);
 157                 callback = va_arg (args, void *);
 158
 159                 widget = glade_xml_get_widget (gui, name);
 160                 if (!widget) {
 161                         g_warning ("Glade file is missing widget '%s', aborting",
 162                                    name);
 163                         continue;
 164                 }
 165
 166                 g_signal_connect (widget,
 167                                   signal,
 168                                   G_CALLBACK (callback),
 169                                   user_data);
 170         }
 171
 172         va_end (args);
 173 }
 174
 175 void
 176 empathy_glade_setup_size_group (GladeXML         *gui,
 177                                GtkSizeGroupMode  mode,
 178                                gchar            *first_widget, ...)
 179 {
 180         va_list       args;
 181         GtkWidget    *widget;
 182         GtkSizeGroup *size_group;
 183         const gchar  *name;
 184
 185         va_start (args, first_widget);
 186
 187         size_group = gtk_size_group_new (mode);
 188
 189         for (name = first_widget; name; name = va_arg (args, char *)) {
 190                 widget = glade_xml_get_widget (gui, name);
 191                 if (!widget) {
 192                         g_warning ("Glade file is missing widget '%s'", name);
 193                         continue;
 194                 }
 195
 196                 gtk_size_group_add_widget (size_group, widget);
 197         }
 198
 199         g_object_unref (size_group);
 200
 201         va_end (args);
 202 }
 203
 204 GdkPixbuf *
 205 empathy_pixbuf_from_icon_name (const gchar *icon_name,
 206                               GtkIconSize  icon_size)
 207 {
 208         GtkIconTheme  *theme;
 209         GdkPixbuf     *pixbuf = NULL;
 210         GError        *error = NULL;
 211         gint           w, h;
 212         gint           size = 48;
 213
 214         theme = gtk_icon_theme_get_default ();
 215
 216         if (gtk_icon_size_lookup (icon_size, &w, &h)) {
 217                 size = (w + h) / 2;
 218         }
 219
 220         pixbuf = gtk_icon_theme_load_icon (theme,
 221                                            icon_name,
 222                                            size,
 223                                            0,
 224                                            &error);
 225         if (error) {
 226                 empathy_debug (DEBUG_DOMAIN, "Error loading icon: %s", error->message);
 227                 g_clear_error (&error);
 228         }
 229
 230         return pixbuf;
 231 }
 232
 233 GdkPixbuf *
 234 empathy_pixbuf_from_smiley (EmpathySmiley type,
 235                            GtkIconSize  icon_size)
 236 {
 237         const gchar *icon_id;
 238
 239         switch (type) {
 240         case EMPATHY_SMILEY_NORMAL:       /*  :)   */
 241                 icon_id = "stock_smiley-1";
 242                 break;
 243         case EMPATHY_SMILEY_WINK:         /*  ;)   */
 244                 icon_id = "stock_smiley-3";
 245                 break;
 246         case EMPATHY_SMILEY_BIGEYE:       /*  =)   */
 247                 icon_id = "stock_smiley-2";
 248                 break;
 249         case EMPATHY_SMILEY_NOSE:         /*  :-)  */
 250                 icon_id = "stock_smiley-7";
 251                 break;
 252         case EMPATHY_SMILEY_CRY:          /*  :'(  */
 253                 icon_id = "stock_smiley-11";
 254                 break;
 255         case EMPATHY_SMILEY_SAD:          /*  :(   */
 256                 icon_id = "stock_smiley-4";
 257                 break;
 258         case EMPATHY_SMILEY_SCEPTICAL:    /*  :/   */
 259                 icon_id = "stock_smiley-9";
 260                 break;
 261         case EMPATHY_SMILEY_BIGSMILE:     /*  :D   */
 262                 icon_id = "stock_smiley-6";
 263                 break;
 264         case EMPATHY_SMILEY_INDIFFERENT:  /*  :|   */
 265                 icon_id = "stock_smiley-8";
 266                 break;
 267         case EMPATHY_SMILEY_TOUNGE:       /*  :p   */
 268                 icon_id = "stock_smiley-10";
 269                 break;
 270         case EMPATHY_SMILEY_SHOCKED:      /*  :o   */
 271                 icon_id = "stock_smiley-5";
 272                 break;
 273         case EMPATHY_SMILEY_COOL:         /*  8)   */
 274                 icon_id = "stock_smiley-15";
 275                 break;
 276         case EMPATHY_SMILEY_SORRY:        /*  *|   */
 277                 icon_id = "stock_smiley-12";
 278                 break;
 279         case EMPATHY_SMILEY_KISS:         /*  :*   */
 280                 icon_id = "stock_smiley-13";
 281                 break;
 282         case EMPATHY_SMILEY_SHUTUP:       /*  :#   */
 283                 icon_id = "stock_smiley-14";
 284                 break;
 285         case EMPATHY_SMILEY_YAWN:         /*  |O   */
 286                 icon_id = "";
 287                 break;
 288         case EMPATHY_SMILEY_CONFUSED:     /*  :$   */
 289                 icon_id = "stock_smiley-17";
 290                 break;
 291         case EMPATHY_SMILEY_ANGEL:        /*  O)   */
 292                 icon_id = "stock_smiley-18";
 293                 break;
 294         case EMPATHY_SMILEY_OOOH:         /*  :x   */
 295                 icon_id = "stock_smiley-19";
 296                 break;
 297         case EMPATHY_SMILEY_LOOKAWAY:     /*  *)   */
 298                 icon_id = "stock_smiley-20";
 299                 break;
 300         case EMPATHY_SMILEY_BLUSH:        /*  *S   */
 301                 icon_id = "stock_smiley-23";
 302                 break;
 303         case EMPATHY_SMILEY_COOLBIGSMILE: /*  8D   */
 304                 icon_id = "stock_smiley-25";
 305                 break;
 306         case EMPATHY_SMILEY_ANGRY:        /*  :@   */
 307                 icon_id = "stock_smiley-16";
 308                 break;
 309         case EMPATHY_SMILEY_BOSS:         /*  @)   */
 310                 icon_id = "stock_smiley-21";
 311                 break;
 312         case EMPATHY_SMILEY_MONKEY:       /*  #)   */
 313                 icon_id = "stock_smiley-22";
 314                 break;
 315         case EMPATHY_SMILEY_SILLY:        /*  O)   */
 316                 icon_id = "stock_smiley-24";
 317                 break;
 318         case EMPATHY_SMILEY_SICK:         /*  +o(  */
 319                 icon_id = "stock_smiley-26";
 320                 break;
 321
 322         default:
 323                 g_assert_not_reached ();
 324                 icon_id = NULL;
 325         }
 326
 327
 328         return empathy_pixbuf_from_icon_name (icon_id, icon_size);
 329 }
 330
 331 const gchar *
 332 empathy_icon_name_from_account (McAccount *account)
 333 {
 334         McProfile *profile;
 335
 336         profile = mc_account_get_profile (account);
 337
 338         return mc_profile_get_icon_name (profile);
 339 }
 340
 341 const gchar *
 342 empathy_icon_name_for_presence_state (McPresence state)
 343 {
 344         switch (state) {
 345         case MC_PRESENCE_AVAILABLE:
 346                 return EMPATHY_IMAGE_AVAILABLE;
 347         case MC_PRESENCE_DO_NOT_DISTURB:
 348                 return EMPATHY_IMAGE_BUSY;
 349         case MC_PRESENCE_AWAY:
 350                 return EMPATHY_IMAGE_AWAY;
 351         case MC_PRESENCE_EXTENDED_AWAY:
 352                 return EMPATHY_IMAGE_EXT_AWAY;
 353         case MC_PRESENCE_HIDDEN:
 354         case MC_PRESENCE_OFFLINE:
 355         case MC_PRESENCE_UNSET:
 356                 return EMPATHY_IMAGE_OFFLINE;
 357         default:
 358                 g_assert_not_reached ();
 359         }
 360
 361         return NULL;
 362 }
 363
 364 const gchar *
 365 empathy_icon_name_for_presence (EmpathyPresence *presence)
 366 {
 367         McPresence state;
 368
 369         g_return_val_if_fail (EMPATHY_IS_PRESENCE (presence),
 370                               EMPATHY_IMAGE_OFFLINE);
 371
 372         state = empathy_presence_get_state (presence);
 373
 374         return empathy_icon_name_for_presence_state (state);
 375 }
 376
 377 const gchar *
 378 empathy_icon_name_for_contact (EmpathyContact *contact)
 379 {
 380         EmpathyPresence     *presence;
 381         EmpathySubscription  subscription;
 382
 383         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact),
 384                               EMPATHY_IMAGE_OFFLINE);
 385
 386         presence = empathy_contact_get_presence (contact);
 387         if (presence) {
 388                 return empathy_icon_name_for_presence (presence);
 389         }
 390
 391         subscription = empathy_contact_get_subscription (contact);
 392         if (!(subscription & EMPATHY_SUBSCRIPTION_FROM)) {
 393                 return EMPATHY_IMAGE_PENDING;
 394         }
 395
 396         return EMPATHY_IMAGE_OFFLINE;
 397 }
 398
 399 static void
 400 pixbuf_from_avatar_size_prepared_cb (GdkPixbufLoader *loader,
 401                                      int              width,
 402                                      int              height,
 403                                      struct SizeData *data)
 404 {
 405         g_return_if_fail (width > 0 && height > 0);
 406
 407         if (data->preserve_aspect_ratio && (data->width > 0 || data->height > 0)) {
 408                 if (width < data->width && height < data->height) {
 409                         width = width;
 410                         height = height;
 411                 }
 412
 413                 if (data->width < 0) {
 414                         width = width * (double) data->height / (gdouble) height;
 415                         height = data->height;
 416                 } else if (data->height < 0) {
 417                         height = height * (double) data->width / (double) width;
 418                         width = data->width;
 419                 } else if ((double) height * (double) data->width >
 420                            (double) width * (double) data->height) {
 421                         width = 0.5 + (double) width * (double) data->height / (double) height;
 422                         height = data->height;
 423                 } else {
 424                         height = 0.5 + (double) height * (double) data->width / (double) width;
 425                         width = data->width;
 426                 }
 427         } else {
 428                 if (data->width > 0) {
 429                         width = data->width;
 430                 }
 431
 432                 if (data->height > 0) {
 433                         height = data->height;
 434                 }
 435         }
 436
 437         gdk_pixbuf_loader_set_size (loader, width, height);
 438 }
 439
 440 static void
 441 empathy_avatar_pixbuf_roundify (GdkPixbuf *pixbuf)
 442 {
 443         gint width, height, rowstride;
 444         guchar *pixels;
 445
 446         width = gdk_pixbuf_get_width (pixbuf);
 447         height = gdk_pixbuf_get_height (pixbuf);
 448         rowstride = gdk_pixbuf_get_rowstride (pixbuf);
 449         pixels = gdk_pixbuf_get_pixels (pixbuf);
 450
 451         if (width < 6 || height < 6) {
 452                 return;
 453         }
 454
 455         /* Top left */
 456         pixels[3] = 0;
 457         pixels[7] = 0x80;
 458         pixels[11] = 0xC0;
 459         pixels[rowstride + 3] = 0x80;
 460         pixels[rowstride * 2 + 3] = 0xC0;
 461
 462         /* Top right */
 463         pixels[width * 4 - 1] = 0;
 464         pixels[width * 4 - 5] = 0x80;
 465         pixels[width * 4 - 9] = 0xC0;
 466         pixels[rowstride + (width * 4) - 1] = 0x80;
 467         pixels[(2 * rowstride) + (width * 4) - 1] = 0xC0;
 468
 469         /* Bottom left */
 470         pixels[(height - 1) * rowstride + 3] = 0;
 471         pixels[(height - 1) * rowstride + 7] = 0x80;
 472         pixels[(height - 1) * rowstride + 11] = 0xC0;
 473         pixels[(height - 2) * rowstride + 3] = 0x80;
 474         pixels[(height - 3) * rowstride + 3] = 0xC0;
 475
 476         /* Bottom right */
 477         pixels[height * rowstride - 1] = 0;
 478         pixels[(height - 1) * rowstride - 1] = 0x80;
 479         pixels[(height - 2) * rowstride - 1] = 0xC0;
 480         pixels[height * rowstride - 5] = 0x80;
 481         pixels[height * rowstride - 9] = 0xC0;
 482 }
 483
 484 static gboolean
 485 empathy_gdk_pixbuf_is_opaque (GdkPixbuf *pixbuf)
 486 {
 487         gint width, height, rowstride, i;
 488         guchar *pixels;
 489         guchar *row;
 490
 491         width = gdk_pixbuf_get_width (pixbuf);
 492         height = gdk_pixbuf_get_height (pixbuf);
 493         rowstride = gdk_pixbuf_get_rowstride (pixbuf);
 494         pixels = gdk_pixbuf_get_pixels (pixbuf);
 495
 496         row = pixels;
 497         for (i = 3; i < rowstride; i+=4) {
 498                 if (row[i] < 0xfe) {
 499                         return FALSE;
 500                 }
 501         }
 502
 503         for (i = 1; i < height - 1; i++) {
 504                 row = pixels + (i*rowstride);
 505                 if (row[3] < 0xfe || row[rowstride-1] < 0xfe) {
 506                         return FALSE;
 507                 }
 508         }
 509
 510         row = pixels + ((height-1) * rowstride);
 511         for (i = 3; i < rowstride; i+=4) {
 512                 if (row[i] < 0xfe) {
 513                         return FALSE;
 514                 }
 515         }
 516
 517         return TRUE;
 518 }
 519
 520 GdkPixbuf *
 521 empathy_pixbuf_from_avatar_scaled (EmpathyAvatar *avatar,
 522                                   gint          width,
 523                                   gint          height)
 524 {
 525         GdkPixbuf        *pixbuf;
 526         GdkPixbufLoader  *loader;
 527         struct SizeData   data;
 528         GError           *error = NULL;
 529
 530         if (!avatar) {
 531                 return NULL;
 532         }
 533
 534         data.width = width;
 535         data.height = height;
 536         data.preserve_aspect_ratio = TRUE;
 537
 538         loader = gdk_pixbuf_loader_new ();
 539
 540         g_signal_connect (loader, "size-prepared",
 541                           G_CALLBACK (pixbuf_from_avatar_size_prepared_cb),
 542                           &data);
 543
 544         if (!gdk_pixbuf_loader_write (loader, avatar->data, avatar->len, &error)) {
 545                 g_warning ("Couldn't write avatar image:%p with "
 546                            "length:%" G_GSIZE_FORMAT " to pixbuf loader: %s",
 547                            avatar->data, avatar->len, error->message);
 548                 g_error_free (error);
 549                 return NULL;
 550         }
 551
 552         gdk_pixbuf_loader_close (loader, NULL);
 553
 554         pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
 555         if (!gdk_pixbuf_get_has_alpha (pixbuf)) {
 556                 GdkPixbuf *rounded_pixbuf;
 557
 558                 rounded_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 559                                                  gdk_pixbuf_get_width (pixbuf),
 560                                                  gdk_pixbuf_get_height (pixbuf));
 561                 gdk_pixbuf_copy_area (pixbuf, 0, 0,
 562                                       gdk_pixbuf_get_width (pixbuf),
 563                                       gdk_pixbuf_get_height (pixbuf),
 564                                       rounded_pixbuf,
 565                                       0, 0);
 566                 pixbuf = rounded_pixbuf;
 567         } else {
 568                 g_object_ref (pixbuf);
 569         }
 570
 571         if (empathy_gdk_pixbuf_is_opaque (pixbuf)) {
 572                 empathy_avatar_pixbuf_roundify (pixbuf);
 573         }
 574
 575         g_object_unref (loader);
 576
 577         return pixbuf;
 578 }
 579
 580 GdkPixbuf *
 581 empathy_pixbuf_avatar_from_contact_scaled (EmpathyContact *contact,
 582                                           gint           width,
 583                                           gint           height)
 584 {
 585         EmpathyAvatar *avatar;
 586
 587         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
 588
 589         avatar = empathy_contact_get_avatar (contact);
 590
 591         return empathy_pixbuf_from_avatar_scaled (avatar, width, height);
 592 }
 593
 594 /* Stolen from GtkSourceView, hence the weird intendation. Please keep it like
 595  * that to make it easier to apply changes from the original code.
 596  */
 597 #define GTK_TEXT_UNKNOWN_CHAR 0xFFFC
 598
 599 /* this function acts like g_utf8_offset_to_pointer() except that if it finds a
 600  * decomposable character it consumes the decomposition length from the given
 601  * offset.  So it's useful when the offset was calculated for the normalized
 602  * version of str, but we need a pointer to str itself. */
 603 static const gchar *
 604 pointer_from_offset_skipping_decomp (const gchar *str, gint offset)
 605 {
 606         gchar *casefold, *normal;
 607         const gchar *p, *q;
 608
 609         p = str;
 610         while (offset > 0)
 611         {
 612                 q = g_utf8_next_char (p);
 613                 casefold = g_utf8_casefold (p, q - p);
 614                 normal = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 615                 offset -= g_utf8_strlen (normal, -1);
 616                 g_free (casefold);
 617                 g_free (normal);
 618                 p = q;
 619         }
 620         return p;
 621 }
 622
 623 static const gchar *
 624 g_utf8_strcasestr (const gchar *haystack, const gchar *needle)
 625 {
 626         gsize needle_len;
 627         gsize haystack_len;
 628         const gchar *ret = NULL;
 629         gchar *p;
 630         gchar *casefold;
 631         gchar *caseless_haystack;
 632         gint i;
 633
 634         g_return_val_if_fail (haystack != NULL, NULL);
 635         g_return_val_if_fail (needle != NULL, NULL);
 636
 637         casefold = g_utf8_casefold (haystack, -1);
 638         caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 639         g_free (casefold);
 640
 641         needle_len = g_utf8_strlen (needle, -1);
 642         haystack_len = g_utf8_strlen (caseless_haystack, -1);
 643
 644         if (needle_len == 0)
 645         {
 646                 ret = (gchar *)haystack;
 647                 goto finally_1;
 648         }
 649
 650         if (haystack_len < needle_len)
 651         {
 652                 ret = NULL;
 653                 goto finally_1;
 654         }
 655
 656         p = (gchar*)caseless_haystack;
 657         needle_len = strlen (needle);
 658         i = 0;
 659
 660         while (*p)
 661         {
 662                 if ((strncmp (p, needle, needle_len) == 0))
 663                 {
 664                         ret = pointer_from_offset_skipping_decomp (haystack, i);
 665                         goto finally_1;
 666                 }
 667
 668                 p = g_utf8_next_char (p);
 669                 i++;
 670         }
 671
 672 finally_1:
 673         g_free (caseless_haystack);
 674
 675         return ret;
 676 }
 677
 678 static gboolean
 679 g_utf8_caselessnmatch (const char *s1, const char *s2,
 680                        gssize n1, gssize n2)
 681 {
 682         gchar *casefold;
 683         gchar *normalized_s1;
 684         gchar *normalized_s2;
 685         gint len_s1;
 686         gint len_s2;
 687         gboolean ret = FALSE;
 688
 689         g_return_val_if_fail (s1 != NULL, FALSE);
 690         g_return_val_if_fail (s2 != NULL, FALSE);
 691         g_return_val_if_fail (n1 > 0, FALSE);
 692         g_return_val_if_fail (n2 > 0, FALSE);
 693
 694         casefold = g_utf8_casefold (s1, n1);
 695         normalized_s1 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 696         g_free (casefold);
 697
 698         casefold = g_utf8_casefold (s2, n2);
 699         normalized_s2 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 700         g_free (casefold);
 701
 702         len_s1 = strlen (normalized_s1);
 703         len_s2 = strlen (normalized_s2);
 704
 705         if (len_s1 < len_s2)
 706                 goto finally_2;
 707
 708         ret = (strncmp (normalized_s1, normalized_s2, len_s2) == 0);
 709
 710 finally_2:
 711         g_free (normalized_s1);
 712         g_free (normalized_s2);
 713
 714         return ret;
 715 }
 716
 717 static void
 718 forward_chars_with_skipping (GtkTextIter *iter,
 719                              gint         count,
 720                              gboolean     skip_invisible,
 721                              gboolean     skip_nontext,
 722                              gboolean     skip_decomp)
 723 {
 724         gint i;
 725
 726         g_return_if_fail (count >= 0);
 727
 728         i = count;
 729
 730         while (i > 0)
 731         {
 732                 gboolean ignored = FALSE;
 733
 734                 /* minimal workaround to avoid the infinite loop of bug #168247.
 735                  * It doesn't fix the problemjust the symptom...
 736                  */
 737                 if (gtk_text_iter_is_end (iter))
 738                         return;
 739
 740                 if (skip_nontext && gtk_text_iter_get_char (iter) == GTK_TEXT_UNKNOWN_CHAR)
 741                         ignored = TRUE;
 742
 743                 if (!ignored && skip_invisible &&
 744                     /* _gtk_text_btree_char_is_invisible (iter)*/ FALSE)
 745                         ignored = TRUE;
 746
 747                 if (!ignored && skip_decomp)
 748                 {
 749                         /* being UTF8 correct sucks; this accounts for extra
 750                            offsets coming from canonical decompositions of
 751                            UTF8 characters (e.g. accented characters) which
 752                            g_utf8_normalize() performs */
 753                         gchar *normal;
 754                         gchar buffer[6];
 755                         gint buffer_len;
 756
 757                         buffer_len = g_unichar_to_utf8 (gtk_text_iter_get_char (iter), buffer);
 758                         normal = g_utf8_normalize (buffer, buffer_len, G_NORMALIZE_NFD);
 759                         i -= (g_utf8_strlen (normal, -1) - 1);
 760                         g_free (normal);
 761                 }
 762
 763                 gtk_text_iter_forward_char (iter);
 764
 765                 if (!ignored)
 766                         --i;
 767         }
 768 }
 769
 770 static gboolean
 771 lines_match (const GtkTextIter *start,
 772              const gchar      **lines,
 773              gboolean           visible_only,
 774              gboolean           slice,
 775              GtkTextIter       *match_start,
 776              GtkTextIter       *match_end)
 777 {
 778         GtkTextIter next;
 779         gchar *line_text;
 780         const gchar *found;
 781         gint offset;
 782
 783         if (*lines == NULL || **lines == '\0')
 784         {
 785                 if (match_start)
 786                         *match_start = *start;
 787                 if (match_end)
 788                         *match_end = *start;
 789                 return TRUE;
 790         }
 791
 792         next = *start;
 793         gtk_text_iter_forward_line (&next);
 794
 795         /* No more text in buffer, but *lines is nonempty */
 796         if (gtk_text_iter_equal (start, &next))
 797                 return FALSE;
 798
 799         if (slice)
 800         {
 801                 if (visible_only)
 802                         line_text = gtk_text_iter_get_visible_slice (start, &next);
 803                 else
 804                         line_text = gtk_text_iter_get_slice (start, &next);
 805         }
 806         else
 807         {
 808                 if (visible_only)
 809                         line_text = gtk_text_iter_get_visible_text (start, &next);
 810                 else
 811                         line_text = gtk_text_iter_get_text (start, &next);
 812         }
 813
 814         if (match_start) /* if this is the first line we're matching */
 815         {
 816                 found = g_utf8_strcasestr (line_text, *lines);
 817         }
 818         else
 819         {
 820                 /* If it's not the first line, we have to match from the
 821                  * start of the line.
 822                  */
 823                 if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text),
 824                                            strlen (*lines)))
 825                         found = line_text;
 826                 else
 827                         found = NULL;
 828         }
 829
 830         if (found == NULL)
 831         {
 832                 g_free (line_text);
 833                 return FALSE;
 834         }
 835
 836         /* Get offset to start of search string */
 837         offset = g_utf8_strlen (line_text, found - line_text);
 838
 839         next = *start;
 840
 841         /* If match start needs to be returned, set it to the
 842          * start of the search string.
 843          */
 844         forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE);
 845         if (match_start)
 846         {
 847                 *match_start = next;
 848         }
 849
 850         /* Go to end of search string */
 851         forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE);
 852
 853         g_free (line_text);
 854
 855         ++lines;
 856
 857         if (match_end)
 858                 *match_end = next;
 859
 860         /* pass NULL for match_start, since we don't need to find the
 861          * start again.
 862          */
 863         return lines_match (&next, lines, visible_only, slice, NULL, match_end);
 864 }
 865
 866 /* strsplit () that retains the delimiter as part of the string. */
 867 static gchar **
 868 strbreakup (const char *string,
 869             const char *delimiter,
 870             gint        max_tokens)
 871 {
 872         GSList *string_list = NULL, *slist;
 873         gchar **str_array, *s, *casefold, *new_string;
 874         guint i, n = 1;
 875
 876         g_return_val_if_fail (string != NULL, NULL);
 877         g_return_val_if_fail (delimiter != NULL, NULL);
 878
 879         if (max_tokens < 1)
 880                 max_tokens = G_MAXINT;
 881
 882         s = strstr (string, delimiter);
 883         if (s)
 884         {
 885                 guint delimiter_len = strlen (delimiter);
 886
 887                 do
 888                 {
 889                         guint len;
 890
 891                         len = s - string + delimiter_len;
 892                         new_string = g_new (gchar, len + 1);
 893                         strncpy (new_string, string, len);
 894                         new_string[len] = 0;
 895                         casefold = g_utf8_casefold (new_string, -1);
 896                         g_free (new_string);
 897                         new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 898                         g_free (casefold);
 899                         string_list = g_slist_prepend (string_list, new_string);
 900                         n++;
 901                         string = s + delimiter_len;
 902                         s = strstr (string, delimiter);
 903                 } while (--max_tokens && s);
 904         }
 905
 906         if (*string)
 907         {
 908                 n++;
 909                 casefold = g_utf8_casefold (string, -1);
 910                 new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 911                 g_free (casefold);
 912                 string_list = g_slist_prepend (string_list, new_string);
 913         }
 914
 915         str_array = g_new (gchar*, n);
 916
 917         i = n - 1;
 918
 919         str_array[i--] = NULL;
 920         for (slist = string_list; slist; slist = slist->next)
 921                 str_array[i--] = slist->data;
 922
 923         g_slist_free (string_list);
 924
 925         return str_array;
 926 }
 927
 928 gboolean
 929 empathy_text_iter_forward_search (const GtkTextIter   *iter,
 930                                  const gchar         *str,
 931                                  GtkTextIter         *match_start,
 932                                  GtkTextIter         *match_end,
 933                                  const GtkTextIter   *limit)
 934 {
 935         gchar **lines = NULL;
 936         GtkTextIter match;
 937         gboolean retval = FALSE;
 938         GtkTextIter search;
 939         gboolean visible_only;
 940         gboolean slice;
 941
 942         g_return_val_if_fail (iter != NULL, FALSE);
 943         g_return_val_if_fail (str != NULL, FALSE);
 944
 945         if (limit && gtk_text_iter_compare (iter, limit) >= 0)
 946                 return FALSE;
 947
 948         if (*str == '\0') {
 949                 /* If we can move one char, return the empty string there */
 950                 match = *iter;
 951
 952                 if (gtk_text_iter_forward_char (&match)) {
 953                         if (limit && gtk_text_iter_equal (&match, limit)) {
 954                                 return FALSE;
 955                         }
 956
 957                         if (match_start) {
 958                                 *match_start = match;
 959                         }
 960                         if (match_end) {
 961                                 *match_end = match;
 962                         }
 963                         return TRUE;
 964                 } else {
 965                         return FALSE;
 966                 }
 967         }
 968
 969         visible_only = TRUE;
 970         slice = FALSE;
 971
 972         /* locate all lines */
 973         lines = strbreakup (str, "\n", -1);
 974
 975         search = *iter;
 976
 977         do {
 978                 /* This loop has an inefficient worst-case, where
 979                  * gtk_text_iter_get_text () is called repeatedly on
 980                  * a single line.
 981                  */
 982                 GtkTextIter end;
 983
 984                 if (limit && gtk_text_iter_compare (&search, limit) >= 0) {
 985                         break;
 986                 }
 987
 988                 if (lines_match (&search, (const gchar**)lines,
 989                                  visible_only, slice, &match, &end)) {
 990                         if (limit == NULL ||
 991                             (limit && gtk_text_iter_compare (&end, limit) <= 0)) {
 992                                 retval = TRUE;
 993
 994                                 if (match_start) {
 995                                         *match_start = match;
 996                                 }
 997                                 if (match_end) {
 998                                         *match_end = end;
 999                                 }
1000                         }
1001                         break;
1002                 }
1003         } while (gtk_text_iter_forward_line (&search));
1004
1005         g_strfreev ((gchar**)lines);
1006
1007         return retval;
1008 }
1009
1010 static const gchar *
1011 g_utf8_strrcasestr (const gchar *haystack, const gchar *needle)
1012 {
1013         gsize needle_len;
1014         gsize haystack_len;
1015         const gchar *ret = NULL;
1016         gchar *p;
1017         gchar *casefold;
1018         gchar *caseless_haystack;
1019         gint i;
1020
1021         g_return_val_if_fail (haystack != NULL, NULL);
1022         g_return_val_if_fail (needle != NULL, NULL);
1023
1024         casefold = g_utf8_casefold (haystack, -1);
1025         caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1026         g_free (casefold);
1027
1028         needle_len = g_utf8_strlen (needle, -1);
1029         haystack_len = g_utf8_strlen (caseless_haystack, -1);
1030
1031         if (needle_len == 0)
1032         {
1033                 ret = (gchar *)haystack;
1034                 goto finally_1;
1035         }
1036
1037         if (haystack_len < needle_len)
1038         {
1039                 ret = NULL;
1040                 goto finally_1;
1041         }
1042
1043         i = haystack_len - needle_len;
1044         p = g_utf8_offset_to_pointer (caseless_haystack, i);
1045         needle_len = strlen (needle);
1046
1047         while (p >= caseless_haystack)
1048         {
1049                 if (strncmp (p, needle, needle_len) == 0)
1050                 {
1051                         ret = pointer_from_offset_skipping_decomp (haystack, i);
1052                         goto finally_1;
1053                 }
1054
1055                 p = g_utf8_prev_char (p);
1056                 i--;
1057         }
1058
1059 finally_1:
1060         g_free (caseless_haystack);
1061
1062         return ret;
1063 }
1064
1065 static gboolean
1066 backward_lines_match (const GtkTextIter *start,
1067                       const gchar      **lines,
1068                       gboolean           visible_only,
1069                       gboolean           slice,
1070                       GtkTextIter       *match_start,
1071                       GtkTextIter       *match_end)
1072 {
1073         GtkTextIter line, next;
1074         gchar *line_text;
1075         const gchar *found;
1076         gint offset;
1077
1078         if (*lines == NULL || **lines == '\0')
1079         {
1080                 if (match_start)
1081                         *match_start = *start;
1082                 if (match_end)
1083                         *match_end = *start;
1084                 return TRUE;
1085         }
1086
1087         line = next = *start;
1088         if (gtk_text_iter_get_line_offset (&next) == 0)
1089         {
1090                 if (!gtk_text_iter_backward_line (&next))
1091                         return FALSE;
1092         }
1093         else
1094                 gtk_text_iter_set_line_offset (&next, 0);
1095
1096         if (slice)
1097         {
1098                 if (visible_only)
1099                         line_text = gtk_text_iter_get_visible_slice (&next, &line);
1100                 else
1101                         line_text = gtk_text_iter_get_slice (&next, &line);
1102         }
1103         else
1104         {
1105                 if (visible_only)
1106                         line_text = gtk_text_iter_get_visible_text (&next, &line);
1107                 else
1108                         line_text = gtk_text_iter_get_text (&next, &line);
1109         }
1110
1111         if (match_start) /* if this is the first line we're matching */
1112         {
1113                 found = g_utf8_strrcasestr (line_text, *lines);
1114         }
1115         else
1116         {
1117                 /* If it's not the first line, we have to match from the
1118                  * start of the line.
1119                  */
1120                 if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text),
1121                                            strlen (*lines)))
1122                         found = line_text;
1123                 else
1124                         found = NULL;
1125         }
1126
1127         if (found == NULL)
1128         {
1129                 g_free (line_text);
1130                 return FALSE;
1131         }
1132
1133         /* Get offset to start of search string */
1134         offset = g_utf8_strlen (line_text, found - line_text);
1135
1136         forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE);
1137
1138         /* If match start needs to be returned, set it to the
1139          * start of the search string.
1140          */
1141         if (match_start)
1142         {
1143                 *match_start = next;
1144         }
1145
1146         /* Go to end of search string */
1147         forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE);
1148
1149         g_free (line_text);
1150
1151         ++lines;
1152
1153         if (match_end)
1154                 *match_end = next;
1155
1156         /* try to match the rest of the lines forward, passing NULL
1157          * for match_start so lines_match will try to match the entire
1158          * line */
1159         return lines_match (&next, lines, visible_only,
1160                             slice, NULL, match_end);
1161 }
1162
1163 gboolean
1164 empathy_text_iter_backward_search (const GtkTextIter   *iter,
1165                                   const gchar         *str,
1166                                   GtkTextIter         *match_start,
1167                                   GtkTextIter         *match_end,
1168                                   const GtkTextIter   *limit)
1169 {
1170         gchar **lines = NULL;
1171         GtkTextIter match;
1172         gboolean retval = FALSE;
1173         GtkTextIter search;
1174         gboolean visible_only;
1175         gboolean slice;
1176
1177         g_return_val_if_fail (iter != NULL, FALSE);
1178         g_return_val_if_fail (str != NULL, FALSE);
1179
1180         if (limit && gtk_text_iter_compare (iter, limit) <= 0)
1181                 return FALSE;
1182
1183         if (*str == '\0')
1184         {
1185                 /* If we can move one char, return the empty string there */
1186                 match = *iter;
1187
1188                 if (gtk_text_iter_backward_char (&match))
1189                 {
1190                         if (limit && gtk_text_iter_equal (&match, limit))
1191                                 return FALSE;
1192
1193                         if (match_start)
1194                                 *match_start = match;
1195                         if (match_end)
1196                                 *match_end = match;
1197                         return TRUE;
1198                 }
1199                 else
1200                 {
1201                         return FALSE;
1202                 }
1203         }
1204
1205         visible_only = TRUE;
1206         slice = TRUE;
1207
1208         /* locate all lines */
1209         lines = strbreakup (str, "\n", -1);
1210
1211         search = *iter;
1212
1213         while (TRUE)
1214         {
1215                 /* This loop has an inefficient worst-case, where
1216                  * gtk_text_iter_get_text () is called repeatedly on
1217                  * a single line.
1218                  */
1219                 GtkTextIter end;
1220
1221                 if (limit && gtk_text_iter_compare (&search, limit) <= 0)
1222                         break;
1223
1224                 if (backward_lines_match (&search, (const gchar**)lines,
1225                                           visible_only, slice, &match, &end))
1226                 {
1227                         if (limit == NULL || (limit &&
1228                                               gtk_text_iter_compare (&end, limit) > 0))
1229                         {
1230                                 retval = TRUE;
1231
1232                                 if (match_start)
1233                                         *match_start = match;
1234                                 if (match_end)
1235                                         *match_end = end;
1236                         }
1237                         break;
1238                 }
1239
1240                 if (gtk_text_iter_get_line_offset (&search) == 0)
1241                 {
1242                         if (!gtk_text_iter_backward_line (&search))
1243                                 break;
1244                 }
1245                 else
1246                 {
1247                         gtk_text_iter_set_line_offset (&search, 0);
1248                 }
1249         }
1250
1251         g_strfreev ((gchar**)lines);
1252
1253         return retval;
1254 }
1255
1256 static gboolean
1257 window_get_is_on_current_workspace (GtkWindow *window)
1258 {
1259         GdkWindow *gdk_window;
1260
1261         gdk_window = GTK_WIDGET (window)->window;
1262         if (gdk_window) {
1263                 return !(gdk_window_get_state (gdk_window) &
1264                          GDK_WINDOW_STATE_ICONIFIED);
1265         } else {
1266                 return FALSE;
1267         }
1268 }
1269
1270 /* Checks if the window is visible as in visible on the current workspace. */
1271 gboolean
1272 empathy_window_get_is_visible (GtkWindow *window)
1273 {
1274         g_return_val_if_fail (GTK_IS_WINDOW (window), FALSE);
1275
1276         return GTK_WIDGET_VISIBLE (GTK_WIDGET (window)) &&
1277                window_get_is_on_current_workspace (window);
1278 }
1279
1280 void
1281 empathy_window_iconify (GtkWindow *window, GtkStatusIcon *status_icon)
1282 {
1283         GdkRectangle  icon_location;
1284         gulong        data[4];
1285         Display      *dpy;
1286         GdkWindow    *gdk_window;
1287
1288         gtk_status_icon_get_geometry (status_icon, NULL, &icon_location, NULL);
1289         gdk_window = GTK_WIDGET (window)->window;
1290         dpy = gdk_x11_drawable_get_xdisplay (gdk_window);
1291
1292         data[0] = icon_location.x;
1293         data[1] = icon_location.y;
1294         data[2] = icon_location.width;
1295         data[3] = icon_location.height;
1296
1297         XChangeProperty (dpy,
1298                          GDK_WINDOW_XID (gdk_window),
1299                          gdk_x11_get_xatom_by_name_for_display (gdk_drawable_get_display (gdk_window),
1300                                                                 "_NET_WM_ICON_GEOMETRY"),
1301                          XA_CARDINAL, 32, PropModeReplace,
1302                          (guchar *)&data, 4);
1303
1304         gtk_window_set_skip_taskbar_hint (window, TRUE);
1305         gtk_window_iconify (window);
1306
1307 }
1308
1309 /* Takes care of moving the window to the current workspace. */
1310 void
1311 empathy_window_present (GtkWindow *window,
1312                        gboolean   steal_focus)
1313 {
1314         gboolean on_current;
1315         guint32  timestamp;
1316
1317         g_return_if_fail (window != NULL);
1318
1319         /* There are three cases: hidden, visible, visible on another
1320          * workspace.
1321          */
1322
1323         on_current = window_get_is_on_current_workspace (window);
1324
1325         if ( GTK_WIDGET_VISIBLE (GTK_WIDGET (window)) && !on_current) {
1326                 /* Hide it so present brings it to the current workspace. */
1327                 gtk_widget_hide (GTK_WIDGET (window));
1328         }
1329
1330         gtk_window_set_skip_taskbar_hint (window, FALSE);
1331
1332         timestamp = gtk_get_current_event_time ();
1333         if (steal_focus && timestamp != GDK_CURRENT_TIME) {
1334                 gtk_window_present_with_time (window, timestamp);
1335         } else {
1336                 gtk_window_present (window);
1337         }
1338 }
1339
1340 GtkWindow *
1341 empathy_get_toplevel_window (GtkWidget *widget)
1342 {
1343         GtkWidget *toplevel;
1344
1345         g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
1346
1347         toplevel = gtk_widget_get_toplevel (widget);
1348         if (GTK_IS_WINDOW (toplevel) &&
1349             GTK_WIDGET_TOPLEVEL (toplevel)) {
1350                 return GTK_WINDOW (toplevel);
1351         }
1352
1353         return NULL;
1354 }
1355
1356 /* The URL opening code can't handle schemeless strings, so we try to be
1357  * smart and add http if there is no scheme or doesn't look like a mail
1358  * address. This should work in most cases, and let us click on strings
1359  * like "www.gnome.org".
1360  */
1361 static gchar *
1362 fixup_url (const gchar *url)
1363 {
1364         gchar *real_url;
1365
1366         if (!g_str_has_prefix (url, "http://") &&
1367             !strstr (url, ":/") &&
1368             !strstr (url, "@")) {
1369                 real_url = g_strdup_printf ("http://%s", url);
1370         } else {
1371                 real_url = g_strdup (url);
1372         }
1373
1374         return real_url;
1375 }
1376
1377 void
1378 empathy_url_show (const char *url)
1379 {
1380         gchar          *real_url;
1381         GnomeVFSResult  res;
1382
1383         real_url = fixup_url (url);
1384         res = gnome_vfs_url_show (real_url);
1385         if (res != GNOME_VFS_OK) {
1386                 empathy_debug (DEBUG_DOMAIN, "Couldn't show URL %s: %s",
1387                               real_url,
1388                               gnome_vfs_result_to_string (res));
1389         }
1390
1391         g_free (real_url);
1392 }
1393
1394 static void
1395 link_button_hook (GtkLinkButton *button,
1396                   const gchar *link,
1397                   gpointer user_data)
1398 {
1399         empathy_url_show (link);
1400 }
1401
1402 GtkWidget *
1403 empathy_link_button_new (const gchar *url,
1404                         const gchar *title)
1405 {
1406         static gboolean hook = FALSE;
1407
1408         if (!hook) {
1409                 hook = TRUE;
1410                 gtk_link_button_set_uri_hook (link_button_hook, NULL, NULL);
1411         }
1412
1413         return gtk_link_button_new_with_label (url, title);
1414 }
1415
1416 void
1417 empathy_toggle_button_set_state_quietly (GtkWidget *widget,
1418                                         GCallback  callback,
1419                                         gpointer   user_data,
1420                                         gboolean   active)
1421 {
1422         g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
1423
1424         g_signal_handlers_block_by_func (widget, callback, user_data);
1425         g_object_set (widget, "active", active, NULL);
1426         g_signal_handlers_unblock_by_func (widget, callback, user_data);
1427 }
1428