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) 2007-2010 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., 51 Franklin St, Fifth Floor,
  19  * Boston, MA  02110-1301  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  *          Jonny Lamb <jonny.lamb@collabora.co.uk>
  26  *          Travis Reitter <travis.reitter@collabora.co.uk>
  27  *
  28  *          Part of this file is copied from GtkSourceView (gtksourceiter.c):
  29  *          Paolo Maggi
  30  *          Jeroen Zwartepoorte
  31  */
  32
  33 #include <config.h>
  34
  35 #include <string.h>
  36 #include <X11/Xatom.h>
  37 #include <gdk/gdkx.h>
  38 #include <glib/gi18n-lib.h>
  39 #include <gtk/gtk.h>
  40 #include <gio/gio.h>
  41
  42 #include <telepathy-glib/util.h>
  43 #include <folks/folks.h>
  44
  45 #include "empathy-ui-utils.h"
  46 #include "empathy-images.h"
  47 #include "empathy-smiley-manager.h"
  48
  49 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  50 #include <libempathy/empathy-debug.h>
  51 #include <libempathy/empathy-utils.h>
  52 #include <libempathy/empathy-dispatcher.h>
  53 #include <libempathy/empathy-idle.h>
  54 #include <libempathy/empathy-ft-factory.h>
  55
  56 void
  57 empathy_gtk_init (void)
  58 {
  59         static gboolean initialized = FALSE;
  60
  61         if (initialized)
  62                 return;
  63
  64         empathy_init ();
  65         gtk_icon_theme_append_search_path (gtk_icon_theme_get_default (),
  66                                            PKGDATADIR G_DIR_SEPARATOR_S "icons");
  67
  68         initialized = TRUE;
  69 }
  70
  71 static GtkBuilder *
  72 builder_get_file_valist (const gchar *filename,
  73                          const gchar *first_object,
  74                          va_list      args)
  75 {
  76         GtkBuilder  *gui;
  77         const gchar *name;
  78         GObject    **object_ptr;
  79         GError      *error = NULL;
  80
  81         DEBUG ("Loading file %s", filename);
  82
  83         gui = gtk_builder_new ();
  84         gtk_builder_set_translation_domain (gui, GETTEXT_PACKAGE);
  85         if (!gtk_builder_add_from_file (gui, filename, &error)) {
  86                 g_critical ("GtkBuilder Error (%s): %s",
  87                                 filename, error->message);
  88                 g_clear_error (&error);
  89                 g_object_unref (gui);
  90
  91                 /* we need to iterate and set all of the pointers to NULL */
  92                 for (name = first_object; name;
  93                      name = va_arg (args, const gchar *)) {
  94                         object_ptr = va_arg (args, GObject**);
  95
  96                         *object_ptr = NULL;
  97                 }
  98
  99                 return NULL;
 100         }
 101
 102         for (name = first_object; name; name = va_arg (args, const gchar *)) {
 103                 object_ptr = va_arg (args, GObject**);
 104
 105                 *object_ptr = gtk_builder_get_object (gui, name);
 106
 107                 if (!*object_ptr) {
 108                         g_warning ("File is missing object '%s'.", name);
 109                         continue;
 110                 }
 111         }
 112
 113         return gui;
 114 }
 115
 116 GtkBuilder *
 117 empathy_builder_get_file (const gchar *filename,
 118                           const gchar *first_object,
 119                           ...)
 120 {
 121         GtkBuilder *gui;
 122         va_list     args;
 123
 124         va_start (args, first_object);
 125         gui = builder_get_file_valist (filename, first_object, args);
 126         va_end (args);
 127
 128         return gui;
 129 }
 130
 131 void
 132 empathy_builder_connect (GtkBuilder *gui,
 133                          gpointer    user_data,
 134                          gchar      *first_object,
 135                          ...)
 136 {
 137         va_list      args;
 138         const gchar *name;
 139         const gchar *sig;
 140         GObject     *object;
 141         GCallback    callback;
 142
 143         va_start (args, first_object);
 144         for (name = first_object; name; name = va_arg (args, const gchar *)) {
 145                 sig = va_arg (args, const gchar *);
 146                 callback = va_arg (args, GCallback);
 147
 148                 object = gtk_builder_get_object (gui, name);
 149                 if (!object) {
 150                         g_warning ("File is missing object '%s'.", name);
 151                         continue;
 152                 }
 153
 154                 g_signal_connect (object, sig, callback, user_data);
 155         }
 156
 157         va_end (args);
 158 }
 159
 160 GtkWidget *
 161 empathy_builder_unref_and_keep_widget (GtkBuilder *gui,
 162                                        GtkWidget  *widget)
 163 {
 164         /* On construction gui sinks the initial reference to widget. When gui
 165          * is finalized it will drop its ref to widget. We take our own ref to
 166          * prevent widget being finalised. The widget is forced to have a
 167          * floating reference, like when it was initially unowned so that it can
 168          * be used like any other GtkWidget. */
 169
 170         g_object_ref (widget);
 171         g_object_force_floating (G_OBJECT (widget));
 172         g_object_unref (gui);
 173
 174         return widget;
 175 }
 176
 177 const gchar *
 178 empathy_icon_name_for_presence (TpConnectionPresenceType presence)
 179 {
 180         switch (presence) {
 181         case TP_CONNECTION_PRESENCE_TYPE_AVAILABLE:
 182                 return EMPATHY_IMAGE_AVAILABLE;
 183         case TP_CONNECTION_PRESENCE_TYPE_BUSY:
 184                 return EMPATHY_IMAGE_BUSY;
 185         case TP_CONNECTION_PRESENCE_TYPE_AWAY:
 186                 return EMPATHY_IMAGE_AWAY;
 187         case TP_CONNECTION_PRESENCE_TYPE_EXTENDED_AWAY:
 188                 if (gtk_icon_theme_has_icon (gtk_icon_theme_get_default (),
 189                                              EMPATHY_IMAGE_EXT_AWAY))
 190                         return EMPATHY_IMAGE_EXT_AWAY;
 191
 192                 /* The 'extended-away' icon is not an official one so we fallback to idle if
 193                  * it's not implemented */
 194                 return EMPATHY_IMAGE_IDLE;
 195         case TP_CONNECTION_PRESENCE_TYPE_HIDDEN:
 196                 if (gtk_icon_theme_has_icon (gtk_icon_theme_get_default (),
 197                                              EMPATHY_IMAGE_HIDDEN))
 198                         return EMPATHY_IMAGE_HIDDEN;
 199
 200                 /* The 'hidden' icon is not an official one so we fallback to offline if
 201                  * it's not implemented */
 202                 return EMPATHY_IMAGE_OFFLINE;
 203         case TP_CONNECTION_PRESENCE_TYPE_OFFLINE:
 204         case TP_CONNECTION_PRESENCE_TYPE_ERROR:
 205                 return EMPATHY_IMAGE_OFFLINE;
 206         case TP_CONNECTION_PRESENCE_TYPE_UNKNOWN:
 207                 return EMPATHY_IMAGE_PENDING;
 208         case TP_CONNECTION_PRESENCE_TYPE_UNSET:
 209                 return NULL;
 210         }
 211
 212         return NULL;
 213 }
 214
 215 const gchar *
 216 empathy_icon_name_for_contact (EmpathyContact *contact)
 217 {
 218         TpConnectionPresenceType presence;
 219
 220         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact),
 221                               EMPATHY_IMAGE_OFFLINE);
 222
 223         presence = empathy_contact_get_presence (contact);
 224         return empathy_icon_name_for_presence (presence);
 225 }
 226
 227 const gchar *
 228 empathy_icon_name_for_individual (FolksIndividual *individual)
 229 {
 230         FolksPresenceType folks_presence;
 231         TpConnectionPresenceType presence;
 232
 233         folks_presence = folks_individual_get_presence_type (individual);
 234         presence = empathy_folks_presence_type_to_tp (folks_presence);
 235
 236         return empathy_icon_name_for_presence (presence);
 237 }
 238
 239 const gchar *
 240 empathy_protocol_name_for_contact (EmpathyContact   *contact)
 241 {
 242         TpAccount     *account;
 243
 244         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
 245
 246         account = empathy_contact_get_account (contact);
 247         if (account == NULL) {
 248                 return NULL;
 249         }
 250
 251         return tp_account_get_icon_name (account);
 252 }
 253
 254 GdkPixbuf *
 255 empathy_pixbuf_from_data (gchar *data,
 256                           gsize  data_size)
 257 {
 258         return empathy_pixbuf_from_data_and_mime (data, data_size, NULL);
 259 }
 260
 261 GdkPixbuf *
 262 empathy_pixbuf_from_data_and_mime (gchar  *data,
 263                                    gsize   data_size,
 264                                    gchar **mime_type)
 265 {
 266         GdkPixbufLoader *loader;
 267         GdkPixbufFormat *format;
 268         GdkPixbuf       *pixbuf = NULL;
 269         gchar          **mime_types;
 270         GError          *error = NULL;
 271
 272         if (!data) {
 273                 return NULL;
 274         }
 275
 276         loader = gdk_pixbuf_loader_new ();
 277         if (!gdk_pixbuf_loader_write (loader, (guchar *) data, data_size, &error)) {
 278                 DEBUG ("Failed to write to pixbuf loader: %s",
 279                         error ? error->message : "No error given");
 280                 goto out;
 281         }
 282         if (!gdk_pixbuf_loader_close (loader, &error)) {
 283                 DEBUG ("Failed to close pixbuf loader: %s",
 284                         error ? error->message : "No error given");
 285                 goto out;
 286         }
 287
 288         pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
 289         if (pixbuf) {
 290                 g_object_ref (pixbuf);
 291
 292                 if (mime_type != NULL) {
 293                         format = gdk_pixbuf_loader_get_format (loader);
 294                         mime_types = gdk_pixbuf_format_get_mime_types (format);
 295
 296                         *mime_type = g_strdup (*mime_types);
 297                         if (mime_types[1] != NULL) {
 298                                 DEBUG ("Loader supports more than one mime "
 299                                         "type! Picking the first one, %s",
 300                                         *mime_type);
 301                         }
 302                         g_strfreev (mime_types);
 303                 }
 304         }
 305
 306 out:
 307         g_clear_error (&error);
 308         g_object_unref (loader);
 309
 310         return pixbuf;
 311 }
 312
 313 struct SizeData {
 314         gint     width;
 315         gint     height;
 316         gboolean preserve_aspect_ratio;
 317 };
 318
 319 static void
 320 pixbuf_from_avatar_size_prepared_cb (GdkPixbufLoader *loader,
 321                                      int              width,
 322                                      int              height,
 323                                      struct SizeData *data)
 324 {
 325         g_return_if_fail (width > 0 && height > 0);
 326
 327         if (data->preserve_aspect_ratio && (data->width > 0 || data->height > 0)) {
 328                 if (width < data->width && height < data->height) {
 329                         width = width;
 330                         height = height;
 331                 }
 332
 333                 if (data->width < 0) {
 334                         width = width * (double) data->height / (gdouble) height;
 335                         height = data->height;
 336                 } else if (data->height < 0) {
 337                         height = height * (double) data->width / (double) width;
 338                         width = data->width;
 339                 } else if ((double) height * (double) data->width >
 340                            (double) width * (double) data->height) {
 341                         width = 0.5 + (double) width * (double) data->height / (double) height;
 342                         height = data->height;
 343                 } else {
 344                         height = 0.5 + (double) height * (double) data->width / (double) width;
 345                         width = data->width;
 346                 }
 347         } else {
 348                 if (data->width > 0) {
 349                         width = data->width;
 350                 }
 351
 352                 if (data->height > 0) {
 353                         height = data->height;
 354                 }
 355         }
 356
 357         gdk_pixbuf_loader_set_size (loader, width, height);
 358 }
 359
 360 static void
 361 empathy_avatar_pixbuf_roundify (GdkPixbuf *pixbuf)
 362 {
 363         gint width, height, rowstride;
 364         guchar *pixels;
 365
 366         width = gdk_pixbuf_get_width (pixbuf);
 367         height = gdk_pixbuf_get_height (pixbuf);
 368         rowstride = gdk_pixbuf_get_rowstride (pixbuf);
 369         pixels = gdk_pixbuf_get_pixels (pixbuf);
 370
 371         if (width < 6 || height < 6) {
 372                 return;
 373         }
 374
 375         /* Top left */
 376         pixels[3] = 0;
 377         pixels[7] = 0x80;
 378         pixels[11] = 0xC0;
 379         pixels[rowstride + 3] = 0x80;
 380         pixels[rowstride * 2 + 3] = 0xC0;
 381
 382         /* Top right */
 383         pixels[width * 4 - 1] = 0;
 384         pixels[width * 4 - 5] = 0x80;
 385         pixels[width * 4 - 9] = 0xC0;
 386         pixels[rowstride + (width * 4) - 1] = 0x80;
 387         pixels[(2 * rowstride) + (width * 4) - 1] = 0xC0;
 388
 389         /* Bottom left */
 390         pixels[(height - 1) * rowstride + 3] = 0;
 391         pixels[(height - 1) * rowstride + 7] = 0x80;
 392         pixels[(height - 1) * rowstride + 11] = 0xC0;
 393         pixels[(height - 2) * rowstride + 3] = 0x80;
 394         pixels[(height - 3) * rowstride + 3] = 0xC0;
 395
 396         /* Bottom right */
 397         pixels[height * rowstride - 1] = 0;
 398         pixels[(height - 1) * rowstride - 1] = 0x80;
 399         pixels[(height - 2) * rowstride - 1] = 0xC0;
 400         pixels[height * rowstride - 5] = 0x80;
 401         pixels[height * rowstride - 9] = 0xC0;
 402 }
 403
 404 static gboolean
 405 empathy_gdk_pixbuf_is_opaque (GdkPixbuf *pixbuf)
 406 {
 407         gint width, height, rowstride, i;
 408         guchar *pixels;
 409         guchar *row;
 410
 411         width = gdk_pixbuf_get_width (pixbuf);
 412         height = gdk_pixbuf_get_height (pixbuf);
 413         rowstride = gdk_pixbuf_get_rowstride (pixbuf);
 414         pixels = gdk_pixbuf_get_pixels (pixbuf);
 415
 416         row = pixels;
 417         for (i = 3; i < rowstride; i+=4) {
 418                 if (row[i] < 0xfe) {
 419                         return FALSE;
 420                 }
 421         }
 422
 423         for (i = 1; i < height - 1; i++) {
 424                 row = pixels + (i*rowstride);
 425                 if (row[3] < 0xfe || row[rowstride-1] < 0xfe) {
 426                         return FALSE;
 427                 }
 428         }
 429
 430         row = pixels + ((height-1) * rowstride);
 431         for (i = 3; i < rowstride; i+=4) {
 432                 if (row[i] < 0xfe) {
 433                         return FALSE;
 434                 }
 435         }
 436
 437         return TRUE;
 438 }
 439
 440 static GdkPixbuf *
 441 avatar_pixbuf_from_loader (GdkPixbufLoader *loader)
 442 {
 443         GdkPixbuf *pixbuf;
 444
 445         pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
 446         if (!gdk_pixbuf_get_has_alpha (pixbuf)) {
 447                 GdkPixbuf *rounded_pixbuf;
 448
 449                 rounded_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 450                                                  gdk_pixbuf_get_width (pixbuf),
 451                                                  gdk_pixbuf_get_height (pixbuf));
 452                 gdk_pixbuf_copy_area (pixbuf, 0, 0,
 453                                       gdk_pixbuf_get_width (pixbuf),
 454                                       gdk_pixbuf_get_height (pixbuf),
 455                                       rounded_pixbuf,
 456                                       0, 0);
 457                 pixbuf = rounded_pixbuf;
 458         } else {
 459                 g_object_ref (pixbuf);
 460         }
 461
 462         if (empathy_gdk_pixbuf_is_opaque (pixbuf)) {
 463                 empathy_avatar_pixbuf_roundify (pixbuf);
 464         }
 465
 466         return pixbuf;
 467 }
 468
 469 GdkPixbuf *
 470 empathy_pixbuf_from_avatar_scaled (EmpathyAvatar *avatar,
 471                                   gint          width,
 472                                   gint          height)
 473 {
 474         GdkPixbuf        *pixbuf;
 475         GdkPixbufLoader  *loader;
 476         struct SizeData   data;
 477         GError           *error = NULL;
 478
 479         if (!avatar) {
 480                 return NULL;
 481         }
 482
 483         data.width = width;
 484         data.height = height;
 485         data.preserve_aspect_ratio = TRUE;
 486
 487         loader = gdk_pixbuf_loader_new ();
 488
 489         g_signal_connect (loader, "size-prepared",
 490                           G_CALLBACK (pixbuf_from_avatar_size_prepared_cb),
 491                           &data);
 492
 493         if (!gdk_pixbuf_loader_write (loader, avatar->data, avatar->len, &error)) {
 494                 g_warning ("Couldn't write avatar image:%p with "
 495                            "length:%" G_GSIZE_FORMAT " to pixbuf loader: %s",
 496                            avatar->data, avatar->len, error->message);
 497                 g_error_free (error);
 498                 return NULL;
 499         }
 500
 501         gdk_pixbuf_loader_close (loader, NULL);
 502         pixbuf = avatar_pixbuf_from_loader (loader);
 503
 504         g_object_unref (loader);
 505
 506         return pixbuf;
 507 }
 508
 509 GdkPixbuf *
 510 empathy_pixbuf_avatar_from_contact_scaled (EmpathyContact *contact,
 511                                           gint           width,
 512                                           gint           height)
 513 {
 514         EmpathyAvatar *avatar;
 515
 516         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
 517
 518         avatar = empathy_contact_get_avatar (contact);
 519
 520         return empathy_pixbuf_from_avatar_scaled (avatar, width, height);
 521 }
 522
 523 typedef struct {
 524         FolksIndividual *individual;
 525         EmpathyPixbufAvatarFromIndividualCb callback;
 526         gpointer user_data;
 527         guint width;
 528         guint height;
 529 } PixbufAvatarFromIndividualClosure;
 530
 531 static PixbufAvatarFromIndividualClosure *
 532 pixbuf_avatar_from_individual_closure_new (FolksIndividual                     *individual,
 533                                            gint                                 width,
 534                                            gint                                 height,
 535                                            EmpathyPixbufAvatarFromIndividualCb  callback,
 536                                            gpointer                             user_data)
 537 {
 538         PixbufAvatarFromIndividualClosure *closure;
 539
 540         g_return_val_if_fail (FOLKS_IS_INDIVIDUAL (individual), NULL);
 541
 542         closure = g_new0 (PixbufAvatarFromIndividualClosure, 1);
 543         closure->individual = g_object_ref (individual);
 544         closure->callback = callback;
 545         closure->user_data = user_data;
 546         closure->width = width;
 547         closure->height = height;
 548
 549         return closure;
 550 }
 551
 552 static void
 553 pixbuf_avatar_from_individual_closure_free (
 554                 PixbufAvatarFromIndividualClosure *closure)
 555 {
 556         g_object_unref (closure->individual);
 557         g_free (closure);
 558 }
 559
 560 static void
 561 avatar_file_load_contents_cb (GObject      *object,
 562                               GAsyncResult *result,
 563                               gpointer      user_data)
 564 {
 565         GFile *file = G_FILE (object);
 566         PixbufAvatarFromIndividualClosure *closure = user_data;
 567         char *data;
 568         gsize data_size;
 569         struct SizeData size_data;
 570         GError *error = NULL;
 571         GdkPixbufLoader *loader = NULL;
 572         GdkPixbuf *pixbuf = NULL;
 573
 574         if (!g_file_load_contents_finish (file, result, &data, &data_size,
 575                                 NULL, &error)) {
 576                 DEBUG ("failed to load avatar from file: %s",
 577                                 error->message);
 578                 goto out;
 579         }
 580
 581         size_data.width = closure->width;
 582         size_data.height = closure->height;
 583         size_data.preserve_aspect_ratio = TRUE;
 584
 585         loader = gdk_pixbuf_loader_new ();
 586
 587         g_signal_connect (loader, "size-prepared",
 588                           G_CALLBACK (pixbuf_from_avatar_size_prepared_cb),
 589                           &size_data);
 590
 591         if (!gdk_pixbuf_loader_write (loader, (guchar *) data, data_size,
 592                                 &error)) {
 593                 DEBUG ("Failed to write to pixbuf loader: %s",
 594                         error ? error->message : "No error given");
 595                 goto out;
 596         }
 597         if (!gdk_pixbuf_loader_close (loader, &error)) {
 598                 DEBUG ("Failed to close pixbuf loader: %s",
 599                         error ? error->message : "No error given");
 600                 goto out;
 601         }
 602
 603         pixbuf = avatar_pixbuf_from_loader (loader);
 604
 605         closure->callback (closure->individual, pixbuf, closure->user_data);
 606
 607 out:
 608         g_clear_error (&error);
 609         g_free (data);
 610         tp_clear_object (&loader);
 611         pixbuf_avatar_from_individual_closure_free (closure);
 612 }
 613
 614 void
 615 empathy_pixbuf_avatar_from_individual_scaled_async (FolksIndividual                     *individual,
 616                                                     gint                                 width,
 617                                                     gint                                 height,
 618                                                     EmpathyPixbufAvatarFromIndividualCb  callback,
 619                                                     gpointer                             user_data)
 620 {
 621         GFile *avatar_file;
 622         PixbufAvatarFromIndividualClosure *closure;
 623
 624         avatar_file = folks_avatar_get_avatar (FOLKS_AVATAR (individual));
 625         if (avatar_file == NULL) {
 626                 goto out;
 627         }
 628
 629         closure = pixbuf_avatar_from_individual_closure_new (individual, width,
 630                                                              height, callback,
 631                                                              user_data);
 632         if (closure == NULL)
 633                 goto out;
 634
 635         g_file_load_contents_async (avatar_file, NULL,
 636                         avatar_file_load_contents_cb, closure);
 637
 638         return;
 639
 640 out:
 641         callback (individual, NULL, user_data);
 642 }
 643
 644 GdkPixbuf *
 645 empathy_pixbuf_contact_status_icon (EmpathyContact *contact,
 646                                    gboolean       show_protocol)
 647 {
 648         const gchar *icon_name;
 649
 650         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
 651
 652         icon_name = empathy_icon_name_for_contact (contact);
 653
 654         if (icon_name == NULL) {
 655                 return NULL;
 656         }
 657         return empathy_pixbuf_contact_status_icon_with_icon_name (contact,
 658             icon_name,
 659             show_protocol);
 660 }
 661
 662 GdkPixbuf *
 663 empathy_pixbuf_contact_status_icon_with_icon_name (EmpathyContact *contact,
 664                                           const gchar    *icon_name,
 665                                           gboolean       show_protocol)
 666 {
 667         GdkPixbuf *pix_status;
 668         GdkPixbuf *pix_protocol;
 669         gchar     *icon_filename;
 670         gint       height, width;
 671         gint       numerator, denominator;
 672
 673         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact) ||
 674                         (show_protocol == FALSE), NULL);
 675         g_return_val_if_fail (icon_name != NULL, NULL);
 676
 677         numerator = 3;
 678         denominator = 4;
 679
 680         icon_filename = empathy_filename_from_icon_name (icon_name,
 681                                                          GTK_ICON_SIZE_MENU);
 682         if (icon_filename == NULL) {
 683                 DEBUG ("icon name: %s could not be found\n", icon_name);
 684                 return NULL;
 685         }
 686
 687         pix_status = gdk_pixbuf_new_from_file (icon_filename, NULL);
 688
 689         if (pix_status == NULL) {
 690                 DEBUG ("Could not open icon %s\n", icon_filename);
 691                 g_free (icon_filename);
 692                 return NULL;
 693         }
 694
 695         g_free (icon_filename);
 696
 697         if (!show_protocol)
 698                 return pix_status;
 699
 700         height = gdk_pixbuf_get_height (pix_status);
 701         width = gdk_pixbuf_get_width (pix_status);
 702
 703         pix_protocol = empathy_pixbuf_protocol_from_contact_scaled (contact,
 704                                                                     width * numerator / denominator,
 705                                                                     height * numerator / denominator);
 706
 707         if (pix_protocol == NULL) {
 708                 return pix_status;
 709         }
 710         gdk_pixbuf_composite (pix_protocol, pix_status,
 711             0, height - height * numerator / denominator,
 712             width * numerator / denominator, height * numerator / denominator,
 713             0, height - height * numerator / denominator,
 714             1, 1,
 715             GDK_INTERP_BILINEAR, 255);
 716
 717         g_object_unref (pix_protocol);
 718
 719         return pix_status;
 720 }
 721
 722 GdkPixbuf *
 723 empathy_pixbuf_protocol_from_contact_scaled (EmpathyContact *contact,
 724                                           gint           width,
 725                                           gint           height)
 726 {
 727         TpAccount *account;
 728         gchar     *filename;
 729         GdkPixbuf *pixbuf = NULL;
 730
 731         g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);
 732
 733         account = empathy_contact_get_account (contact);
 734         filename = empathy_filename_from_icon_name (tp_account_get_icon_name (account),
 735                                                     GTK_ICON_SIZE_MENU);
 736         if (filename != NULL) {
 737                 pixbuf = gdk_pixbuf_new_from_file_at_size (filename, width, height, NULL);
 738                 g_free (filename);
 739         }
 740
 741         return pixbuf;
 742 }
 743
 744 GdkPixbuf *
 745 empathy_pixbuf_scale_down_if_necessary (GdkPixbuf *pixbuf, gint max_size)
 746 {
 747         gint      width, height;
 748         gdouble   factor;
 749
 750         width = gdk_pixbuf_get_width (pixbuf);
 751         height = gdk_pixbuf_get_height (pixbuf);
 752
 753         if (width > 0 && (width > max_size || height > max_size)) {
 754                 factor = (gdouble) max_size / MAX (width, height);
 755
 756                 width = width * factor;
 757                 height = height * factor;
 758
 759                 return gdk_pixbuf_scale_simple (pixbuf,
 760                                                 width, height,
 761                                                 GDK_INTERP_HYPER);
 762         }
 763
 764         return g_object_ref (pixbuf);
 765 }
 766
 767 GdkPixbuf *
 768 empathy_pixbuf_from_icon_name_sized (const gchar *icon_name,
 769                                      gint size)
 770 {
 771         GtkIconTheme *theme;
 772         GdkPixbuf *pixbuf;
 773         GError *error = NULL;
 774
 775         if (!icon_name) {
 776                 return NULL;
 777         }
 778
 779         theme = gtk_icon_theme_get_default ();
 780
 781         pixbuf = gtk_icon_theme_load_icon (theme,
 782                                            icon_name,
 783                                            size,
 784                                            0,
 785                                            &error);
 786         if (error) {
 787                 DEBUG ("Error loading icon: %s", error->message);
 788                 g_clear_error (&error);
 789         }
 790
 791         return pixbuf;
 792 }
 793
 794 GdkPixbuf *
 795 empathy_pixbuf_from_icon_name (const gchar *icon_name,
 796                                GtkIconSize  icon_size)
 797 {
 798         gint  w, h;
 799         gint  size = 48;
 800
 801         if (!icon_name) {
 802                 return NULL;
 803         }
 804
 805         if (gtk_icon_size_lookup (icon_size, &w, &h)) {
 806                 size = (w + h) / 2;
 807         }
 808
 809         return empathy_pixbuf_from_icon_name_sized (icon_name, size);
 810 }
 811
 812 gchar *
 813 empathy_filename_from_icon_name (const gchar *icon_name,
 814                                  GtkIconSize  icon_size)
 815 {
 816         GtkIconTheme *icon_theme;
 817         GtkIconInfo  *icon_info;
 818         gint          w, h;
 819         gint          size = 48;
 820         gchar        *ret;
 821
 822         icon_theme = gtk_icon_theme_get_default ();
 823
 824         if (gtk_icon_size_lookup (icon_size, &w, &h)) {
 825                 size = (w + h) / 2;
 826         }
 827
 828         icon_info = gtk_icon_theme_lookup_icon (icon_theme, icon_name, size, 0);
 829         ret = g_strdup (gtk_icon_info_get_filename (icon_info));
 830         gtk_icon_info_free (icon_info);
 831
 832         return ret;
 833 }
 834
 835 /* Stolen from GtkSourceView, hence the weird intendation. Please keep it like
 836  * that to make it easier to apply changes from the original code.
 837  */
 838 #define GTK_TEXT_UNKNOWN_CHAR 0xFFFC
 839
 840 /* this function acts like g_utf8_offset_to_pointer() except that if it finds a
 841  * decomposable character it consumes the decomposition length from the given
 842  * offset.  So it's useful when the offset was calculated for the normalized
 843  * version of str, but we need a pointer to str itself. */
 844 static const gchar *
 845 pointer_from_offset_skipping_decomp (const gchar *str, gint offset)
 846 {
 847         gchar *casefold, *normal;
 848         const gchar *p, *q;
 849
 850         p = str;
 851         while (offset > 0)
 852         {
 853                 q = g_utf8_next_char (p);
 854                 casefold = g_utf8_casefold (p, q - p);
 855                 normal = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 856                 offset -= g_utf8_strlen (normal, -1);
 857                 g_free (casefold);
 858                 g_free (normal);
 859                 p = q;
 860         }
 861         return p;
 862 }
 863
 864 static const gchar *
 865 g_utf8_strcasestr (const gchar *haystack, const gchar *needle)
 866 {
 867         gsize needle_len;
 868         gsize haystack_len;
 869         const gchar *ret = NULL;
 870         gchar *p;
 871         gchar *casefold;
 872         gchar *caseless_haystack;
 873         gint i;
 874
 875         g_return_val_if_fail (haystack != NULL, NULL);
 876         g_return_val_if_fail (needle != NULL, NULL);
 877
 878         casefold = g_utf8_casefold (haystack, -1);
 879         caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 880         g_free (casefold);
 881
 882         needle_len = g_utf8_strlen (needle, -1);
 883         haystack_len = g_utf8_strlen (caseless_haystack, -1);
 884
 885         if (needle_len == 0)
 886         {
 887                 ret = (gchar *) haystack;
 888                 goto finally_1;
 889         }
 890
 891         if (haystack_len < needle_len)
 892         {
 893                 ret = NULL;
 894                 goto finally_1;
 895         }
 896
 897         p = (gchar *) caseless_haystack;
 898         needle_len = strlen (needle);
 899         i = 0;
 900
 901         while (*p)
 902         {
 903                 if ((strncmp (p, needle, needle_len) == 0))
 904                 {
 905                         ret = pointer_from_offset_skipping_decomp (haystack, i);
 906                         goto finally_1;
 907                 }
 908
 909                 p = g_utf8_next_char (p);
 910                 i++;
 911         }
 912
 913 finally_1:
 914         g_free (caseless_haystack);
 915
 916         return ret;
 917 }
 918
 919 static gboolean
 920 g_utf8_caselessnmatch (const char *s1, const char *s2,
 921                        gssize n1, gssize n2)
 922 {
 923         gchar *casefold;
 924         gchar *normalized_s1;
 925         gchar *normalized_s2;
 926         gint len_s1;
 927         gint len_s2;
 928         gboolean ret = FALSE;
 929
 930         g_return_val_if_fail (s1 != NULL, FALSE);
 931         g_return_val_if_fail (s2 != NULL, FALSE);
 932         g_return_val_if_fail (n1 > 0, FALSE);
 933         g_return_val_if_fail (n2 > 0, FALSE);
 934
 935         casefold = g_utf8_casefold (s1, n1);
 936         normalized_s1 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 937         g_free (casefold);
 938
 939         casefold = g_utf8_casefold (s2, n2);
 940         normalized_s2 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
 941         g_free (casefold);
 942
 943         len_s1 = strlen (normalized_s1);
 944         len_s2 = strlen (normalized_s2);
 945
 946         if (len_s1 < len_s2)
 947                 goto finally_2;
 948
 949         ret = (strncmp (normalized_s1, normalized_s2, len_s2) == 0);
 950
 951 finally_2:
 952         g_free (normalized_s1);
 953         g_free (normalized_s2);
 954
 955         return ret;
 956 }
 957
 958 static void
 959 forward_chars_with_skipping (GtkTextIter *iter,
 960                              gint         count,
 961                              gboolean     skip_invisible,
 962                              gboolean     skip_nontext,
 963                              gboolean     skip_decomp)
 964 {
 965         gint i;
 966
 967         g_return_if_fail (count >= 0);
 968
 969         i = count;
 970
 971         while (i > 0)
 972         {
 973                 gboolean ignored = FALSE;
 974
 975                 /* minimal workaround to avoid the infinite loop of bug #168247.
 976                  * It doesn't fix the problemjust the symptom...
 977                  */
 978                 if (gtk_text_iter_is_end (iter))
 979                         return;
 980
 981                 if (skip_nontext && gtk_text_iter_get_char (iter) == GTK_TEXT_UNKNOWN_CHAR)
 982                         ignored = TRUE;
 983
 984                 if (!ignored && skip_invisible &&
 985                     /* _gtk_text_btree_char_is_invisible (iter)*/ FALSE)
 986                         ignored = TRUE;
 987
 988                 if (!ignored && skip_decomp)
 989                 {
 990                         /* being UTF8 correct sucks; this accounts for extra
 991                            offsets coming from canonical decompositions of
 992                            UTF8 characters (e.g. accented characters) which
 993                            g_utf8_normalize () performs */
 994                         gchar *normal;
 995                         gchar buffer[6];
 996                         gint buffer_len;
 997
 998                         buffer_len = g_unichar_to_utf8 (gtk_text_iter_get_char (iter), buffer);
 999                         normal = g_utf8_normalize (buffer, buffer_len, G_NORMALIZE_NFD);
1000                         i -= (g_utf8_strlen (normal, -1) - 1);
1001                         g_free (normal);
1002                 }
1003
1004                 gtk_text_iter_forward_char (iter);
1005
1006                 if (!ignored)
1007                         --i;
1008         }
1009 }
1010
1011 static gboolean
1012 lines_match (const GtkTextIter *start,
1013              const gchar      **lines,
1014              gboolean           visible_only,
1015              gboolean           slice,
1016              GtkTextIter       *match_start,
1017              GtkTextIter       *match_end)
1018 {
1019         GtkTextIter next;
1020         gchar *line_text;
1021         const gchar *found;
1022         gint offset;
1023
1024         if (*lines == NULL || **lines == '\0')
1025         {
1026                 if (match_start)
1027                         *match_start = *start;
1028                 if (match_end)
1029                         *match_end = *start;
1030                 return TRUE;
1031         }
1032
1033         next = *start;
1034         gtk_text_iter_forward_line (&next);
1035
1036         /* No more text in buffer, but *lines is nonempty */
1037         if (gtk_text_iter_equal (start, &next))
1038                 return FALSE;
1039
1040         if (slice)
1041         {
1042                 if (visible_only)
1043                         line_text = gtk_text_iter_get_visible_slice (start, &next);
1044                 else
1045                         line_text = gtk_text_iter_get_slice (start, &next);
1046         }
1047         else
1048         {
1049                 if (visible_only)
1050                         line_text = gtk_text_iter_get_visible_text (start, &next);
1051                 else
1052                         line_text = gtk_text_iter_get_text (start, &next);
1053         }
1054
1055         if (match_start) /* if this is the first line we're matching */
1056         {
1057                 found = g_utf8_strcasestr (line_text, *lines);
1058         }
1059         else
1060         {
1061                 /* If it's not the first line, we have to match from the
1062                  * start of the line.
1063                  */
1064                 if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text),
1065                                            strlen (*lines)))
1066                         found = line_text;
1067                 else
1068                         found = NULL;
1069         }
1070
1071         if (found == NULL)
1072         {
1073                 g_free (line_text);
1074                 return FALSE;
1075         }
1076
1077         /* Get offset to start of search string */
1078         offset = g_utf8_strlen (line_text, found - line_text);
1079
1080         next = *start;
1081
1082         /* If match start needs to be returned, set it to the
1083          * start of the search string.
1084          */
1085         forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE);
1086         if (match_start)
1087         {
1088                 *match_start = next;
1089         }
1090
1091         /* Go to end of search string */
1092         forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE);
1093
1094         g_free (line_text);
1095
1096         ++lines;
1097
1098         if (match_end)
1099                 *match_end = next;
1100
1101         /* pass NULL for match_start, since we don't need to find the
1102          * start again.
1103          */
1104         return lines_match (&next, lines, visible_only, slice, NULL, match_end);
1105 }
1106
1107 /* strsplit () that retains the delimiter as part of the string. */
1108 static gchar **
1109 strbreakup (const char *string,
1110             const char *delimiter,
1111             gint        max_tokens)
1112 {
1113         GSList *string_list = NULL, *slist;
1114         gchar **str_array, *s, *casefold, *new_string;
1115         guint i, n = 1;
1116
1117         g_return_val_if_fail (string != NULL, NULL);
1118         g_return_val_if_fail (delimiter != NULL, NULL);
1119
1120         if (max_tokens < 1)
1121                 max_tokens = G_MAXINT;
1122
1123         s = strstr (string, delimiter);
1124         if (s)
1125         {
1126                 guint delimiter_len = strlen (delimiter);
1127
1128                 do
1129                 {
1130                         guint len;
1131
1132                         len = s - string + delimiter_len;
1133                         new_string = g_new (gchar, len + 1);
1134                         strncpy (new_string, string, len);
1135                         new_string[len] = 0;
1136                         casefold = g_utf8_casefold (new_string, -1);
1137                         g_free (new_string);
1138                         new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1139                         g_free (casefold);
1140                         string_list = g_slist_prepend (string_list, new_string);
1141                         n++;
1142                         string = s + delimiter_len;
1143                         s = strstr (string, delimiter);
1144                 } while (--max_tokens && s);
1145         }
1146
1147         if (*string)
1148         {
1149                 n++;
1150                 casefold = g_utf8_casefold (string, -1);
1151                 new_string = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1152                 g_free (casefold);
1153                 string_list = g_slist_prepend (string_list, new_string);
1154         }
1155
1156         str_array = g_new (gchar*, n);
1157
1158         i = n - 1;
1159
1160         str_array[i--] = NULL;
1161         for (slist = string_list; slist; slist = slist->next)
1162                 str_array[i--] = slist->data;
1163
1164         g_slist_free (string_list);
1165
1166         return str_array;
1167 }
1168
1169 gboolean
1170 empathy_text_iter_forward_search (const GtkTextIter   *iter,
1171                                  const gchar         *str,
1172                                  GtkTextIter         *match_start,
1173                                  GtkTextIter         *match_end,
1174                                  const GtkTextIter   *limit)
1175 {
1176         gchar **lines = NULL;
1177         GtkTextIter match;
1178         gboolean retval = FALSE;
1179         GtkTextIter search;
1180         gboolean visible_only;
1181         gboolean slice;
1182
1183         g_return_val_if_fail (iter != NULL, FALSE);
1184         g_return_val_if_fail (str != NULL, FALSE);
1185
1186         if (limit && gtk_text_iter_compare (iter, limit) >= 0)
1187                 return FALSE;
1188
1189         if (*str == '\0') {
1190                 /* If we can move one char, return the empty string there */
1191                 match = *iter;
1192
1193                 if (gtk_text_iter_forward_char (&match)) {
1194                         if (limit && gtk_text_iter_equal (&match, limit)) {
1195                                 return FALSE;
1196                         }
1197
1198                         if (match_start) {
1199                                 *match_start = match;
1200                         }
1201                         if (match_end) {
1202                                 *match_end = match;
1203                         }
1204                         return TRUE;
1205                 } else {
1206                         return FALSE;
1207                 }
1208         }
1209
1210         visible_only = TRUE;
1211         slice = FALSE;
1212
1213         /* locate all lines */
1214         lines = strbreakup (str, "\n", -1);
1215
1216         search = *iter;
1217
1218         do {
1219                 /* This loop has an inefficient worst-case, where
1220                  * gtk_text_iter_get_text () is called repeatedly on
1221                  * a single line.
1222                  */
1223                 GtkTextIter end;
1224
1225                 if (limit && gtk_text_iter_compare (&search, limit) >= 0) {
1226                         break;
1227                 }
1228
1229                 if (lines_match (&search, (const gchar**)lines,
1230                                  visible_only, slice, &match, &end)) {
1231                         if (limit == NULL ||
1232                             (limit && gtk_text_iter_compare (&end, limit) <= 0)) {
1233                                 retval = TRUE;
1234
1235                                 if (match_start) {
1236                                         *match_start = match;
1237                                 }
1238                                 if (match_end) {
1239                                         *match_end = end;
1240                                 }
1241                         }
1242                         break;
1243                 }
1244         } while (gtk_text_iter_forward_line (&search));
1245
1246         g_strfreev ((gchar **) lines);
1247
1248         return retval;
1249 }
1250
1251 static const gchar *
1252 g_utf8_strrcasestr (const gchar *haystack, const gchar *needle)
1253 {
1254         gsize needle_len;
1255         gsize haystack_len;
1256         const gchar *ret = NULL;
1257         gchar *p;
1258         gchar *casefold;
1259         gchar *caseless_haystack;
1260         gint i;
1261
1262         g_return_val_if_fail (haystack != NULL, NULL);
1263         g_return_val_if_fail (needle != NULL, NULL);
1264
1265         casefold = g_utf8_casefold (haystack, -1);
1266         caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
1267         g_free (casefold);
1268
1269         needle_len = g_utf8_strlen (needle, -1);
1270         haystack_len = g_utf8_strlen (caseless_haystack, -1);
1271
1272         if (needle_len == 0)
1273         {
1274                 ret = (gchar *) haystack;
1275                 goto finally_1;
1276         }
1277
1278         if (haystack_len < needle_len)
1279         {
1280                 ret = NULL;
1281                 goto finally_1;
1282         }
1283
1284         i = haystack_len - needle_len;
1285         p = g_utf8_offset_to_pointer (caseless_haystack, i);
1286         needle_len = strlen (needle);
1287
1288         while (p >= caseless_haystack)
1289         {
1290                 if (strncmp (p, needle, needle_len) == 0)
1291                 {
1292                         ret = pointer_from_offset_skipping_decomp (haystack, i);
1293                         goto finally_1;
1294                 }
1295
1296                 p = g_utf8_prev_char (p);
1297                 i--;
1298         }
1299
1300 finally_1:
1301         g_free (caseless_haystack);
1302
1303         return ret;
1304 }
1305
1306 static gboolean
1307 backward_lines_match (const GtkTextIter *start,
1308                       const gchar      **lines,
1309                       gboolean           visible_only,
1310                       gboolean           slice,
1311                       GtkTextIter       *match_start,
1312                       GtkTextIter       *match_end)
1313 {
1314         GtkTextIter line, next;
1315         gchar *line_text;
1316         const gchar *found;
1317         gint offset;
1318
1319         if (*lines == NULL || **lines == '\0')
1320         {
1321                 if (match_start)
1322                         *match_start = *start;
1323                 if (match_end)
1324                         *match_end = *start;
1325                 return TRUE;
1326         }
1327
1328         line = next = *start;
1329         if (gtk_text_iter_get_line_offset (&next) == 0)
1330         {
1331                 if (!gtk_text_iter_backward_line (&next))
1332                         return FALSE;
1333         }
1334         else
1335                 gtk_text_iter_set_line_offset (&next, 0);
1336
1337         if (slice)
1338         {
1339                 if (visible_only)
1340                         line_text = gtk_text_iter_get_visible_slice (&next, &line);
1341                 else
1342                         line_text = gtk_text_iter_get_slice (&next, &line);
1343         }
1344         else
1345         {
1346                 if (visible_only)
1347                         line_text = gtk_text_iter_get_visible_text (&next, &line);
1348                 else
1349                         line_text = gtk_text_iter_get_text (&next, &line);
1350         }
1351
1352         if (match_start) /* if this is the first line we're matching */
1353         {
1354                 found = g_utf8_strrcasestr (line_text, *lines);
1355         }
1356         else
1357         {
1358                 /* If it's not the first line, we have to match from the
1359                  * start of the line.
1360                  */
1361                 if (g_utf8_caselessnmatch (line_text, *lines, strlen (line_text),
1362                                            strlen (*lines)))
1363                         found = line_text;
1364                 else
1365                         found = NULL;
1366         }
1367
1368         if (found == NULL)
1369         {
1370                 g_free (line_text);
1371                 return FALSE;
1372         }
1373
1374         /* Get offset to start of search string */
1375         offset = g_utf8_strlen (line_text, found - line_text);
1376
1377         forward_chars_with_skipping (&next, offset, visible_only, !slice, FALSE);
1378
1379         /* If match start needs to be returned, set it to the
1380          * start of the search string.
1381          */
1382         if (match_start)
1383         {
1384                 *match_start = next;
1385         }
1386
1387         /* Go to end of search string */
1388         forward_chars_with_skipping (&next, g_utf8_strlen (*lines, -1), visible_only, !slice, TRUE);
1389
1390         g_free (line_text);
1391
1392         ++lines;
1393
1394         if (match_end)
1395                 *match_end = next;
1396
1397         /* try to match the rest of the lines forward, passing NULL
1398          * for match_start so lines_match will try to match the entire
1399          * line */
1400         return lines_match (&next, lines, visible_only,
1401                             slice, NULL, match_end);
1402 }
1403
1404 gboolean
1405 empathy_text_iter_backward_search (const GtkTextIter   *iter,
1406                                   const gchar         *str,
1407                                   GtkTextIter         *match_start,
1408                                   GtkTextIter         *match_end,
1409                                   const GtkTextIter   *limit)
1410 {
1411         gchar **lines = NULL;
1412         GtkTextIter match;
1413         gboolean retval = FALSE;
1414         GtkTextIter search;
1415         gboolean visible_only;
1416         gboolean slice;
1417
1418         g_return_val_if_fail (iter != NULL, FALSE);
1419         g_return_val_if_fail (str != NULL, FALSE);
1420
1421         if (limit && gtk_text_iter_compare (iter, limit) <= 0)
1422                 return FALSE;
1423
1424         if (*str == '\0')
1425         {
1426                 /* If we can move one char, return the empty string there */
1427                 match = *iter;
1428
1429                 if (gtk_text_iter_backward_char (&match))
1430                 {
1431                         if (limit && gtk_text_iter_equal (&match, limit))
1432                                 return FALSE;
1433
1434                         if (match_start)
1435                                 *match_start = match;
1436                         if (match_end)
1437                                 *match_end = match;
1438                         return TRUE;
1439                 }
1440                 else
1441                 {
1442                         return FALSE;
1443                 }
1444         }
1445
1446         visible_only = TRUE;
1447         slice = TRUE;
1448
1449         /* locate all lines */
1450         lines = strbreakup (str, "\n", -1);
1451
1452         search = *iter;
1453
1454         while (TRUE)
1455         {
1456                 /* This loop has an inefficient worst-case, where
1457                  * gtk_text_iter_get_text () is called repeatedly on
1458                  * a single line.
1459                  */
1460                 GtkTextIter end;
1461
1462                 if (limit && gtk_text_iter_compare (&search, limit) <= 0)
1463                         break;
1464
1465                 if (backward_lines_match (&search, (const gchar**)lines,
1466                                           visible_only, slice, &match, &end))
1467                 {
1468                         if (limit == NULL || (limit &&
1469                                               gtk_text_iter_compare (&end, limit) > 0))
1470                         {
1471                                 retval = TRUE;
1472
1473                                 if (match_start)
1474                                         *match_start = match;
1475                                 if (match_end)
1476                                         *match_end = end;
1477                         }
1478                         break;
1479                 }
1480
1481                 if (gtk_text_iter_get_line_offset (&search) == 0)
1482                 {
1483                         if (!gtk_text_iter_backward_line (&search))
1484                                 break;
1485                 }
1486                 else
1487                 {
1488                         gtk_text_iter_set_line_offset (&search, 0);
1489                 }
1490         }
1491
1492         g_strfreev ((gchar **) lines);
1493
1494         return retval;
1495 }
1496
1497 gboolean
1498 empathy_window_get_is_visible (GtkWindow *window)
1499 {
1500         GdkWindowState  state;
1501         GdkWindow      *gdk_window;
1502
1503         g_return_val_if_fail (GTK_IS_WINDOW (window), FALSE);
1504
1505         gdk_window = gtk_widget_get_window (GTK_WIDGET (window));
1506         if (!gdk_window) {
1507                 return FALSE;
1508         }
1509
1510         state = gdk_window_get_state (gdk_window);
1511         if (state & (GDK_WINDOW_STATE_WITHDRAWN | GDK_WINDOW_STATE_ICONIFIED)) {
1512                 return FALSE;
1513         }
1514
1515         return TRUE;
1516 }
1517
1518 void
1519 empathy_window_iconify (GtkWindow *window, GtkStatusIcon *status_icon)
1520 {
1521         GdkRectangle  icon_location;
1522         gulong        data[4];
1523         Display      *dpy;
1524         GdkWindow    *gdk_window;
1525
1526         gtk_status_icon_get_geometry (status_icon, NULL, &icon_location, NULL);
1527         gdk_window = gtk_widget_get_window (GTK_WIDGET (window));
1528         dpy = gdk_x11_drawable_get_xdisplay (gdk_window);
1529
1530         data[0] = icon_location.x;
1531         data[1] = icon_location.y;
1532         data[2] = icon_location.width;
1533         data[3] = icon_location.height;
1534
1535         XChangeProperty (dpy,
1536                          GDK_WINDOW_XID (gdk_window),
1537                          gdk_x11_get_xatom_by_name_for_display (
1538                                 gdk_drawable_get_display (gdk_window),
1539                          "_NET_WM_ICON_GEOMETRY"),
1540                          XA_CARDINAL, 32, PropModeReplace,
1541                          (guchar *)&data, 4);
1542
1543         gtk_window_set_skip_taskbar_hint (window, TRUE);
1544         gtk_window_iconify (window);
1545 }
1546
1547 /* Takes care of moving the window to the current workspace. */
1548 void
1549 empathy_window_present_with_time (GtkWindow *window,
1550                         guint32 timestamp)
1551 {
1552         GdkWindow *gdk_window;
1553
1554         g_return_if_fail (GTK_IS_WINDOW (window));
1555
1556         /* Move the window to the current workspace before trying to show it.
1557          * This is the behaviour people expect when clicking on the statusbar icon. */
1558         gdk_window = gtk_widget_get_window (GTK_WIDGET (window));
1559         if (gdk_window) {
1560                 gint x, y;
1561                 gint w, h;
1562
1563                 /* Has no effect if the WM has viewports, like compiz */
1564                 gdk_x11_window_move_to_current_desktop (gdk_window);
1565
1566                 /* If window is still off-screen, hide it to force it to
1567                  * reposition on the current workspace. */
1568                 gtk_window_get_position (window, &x, &y);
1569                 gtk_window_get_size (window, &w, &h);
1570                 if (!EMPATHY_RECT_IS_ON_SCREEN (x, y, w, h))
1571                         gtk_widget_hide (GTK_WIDGET (window));
1572         }
1573
1574         gtk_window_present_with_time (window, timestamp);
1575         gtk_window_set_skip_taskbar_hint (window, FALSE);
1576         gtk_window_deiconify (window);
1577 }
1578
1579 void
1580 empathy_window_present (GtkWindow *window)
1581 {
1582   empathy_window_present_with_time (window, GDK_CURRENT_TIME);
1583 }
1584
1585 GtkWindow *
1586 empathy_get_toplevel_window (GtkWidget *widget)
1587 {
1588         GtkWidget *toplevel;
1589
1590         g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
1591
1592         toplevel = gtk_widget_get_toplevel (widget);
1593         if (GTK_IS_WINDOW (toplevel) &&
1594             gtk_widget_is_toplevel (toplevel)) {
1595                 return GTK_WINDOW (toplevel);
1596         }
1597
1598         return NULL;
1599 }
1600
1601 /** empathy_make_absolute_url_len:
1602  * @url: an url
1603  * @len: a length
1604  *
1605  * Same as #empathy_make_absolute_url but for a limited string length
1606  */
1607 gchar *
1608 empathy_make_absolute_url_len (const gchar *url,
1609                                guint len)
1610 {
1611         g_return_val_if_fail (url != NULL, NULL);
1612
1613         if (g_str_has_prefix (url, "ghelp:") ||
1614             g_str_has_prefix (url, "mailto:") ||
1615             strstr (url, ":/")) {
1616                 return g_strndup (url, len);
1617         }
1618
1619         if (strstr (url, "@")) {
1620                 return g_strdup_printf ("mailto:%.*s", len, url);
1621         }
1622
1623         return g_strdup_printf ("http://%.*s", len, url);
1624 }
1625
1626 /** empathy_make_absolute_url:
1627  * @url: an url
1628  *
1629  * The URL opening code can't handle schemeless strings, so we try to be
1630  * smart and add http if there is no scheme or doesn't look like a mail
1631  * address. This should work in most cases, and let us click on strings
1632  * like "www.gnome.org".
1633  *
1634  * Returns: a newly allocated url with proper mailto: or http:// prefix, use
1635  * g_free when your are done with it
1636  */
1637 gchar *
1638 empathy_make_absolute_url (const gchar *url)
1639 {
1640         return empathy_make_absolute_url_len (url, strlen (url));
1641 }
1642
1643 void
1644 empathy_url_show (GtkWidget *parent,
1645                   const char *url)
1646 {
1647         gchar  *real_url;
1648         GError *error = NULL;
1649
1650         g_return_if_fail (parent == NULL || GTK_IS_WIDGET (parent));
1651         g_return_if_fail (url != NULL);
1652
1653         real_url = empathy_make_absolute_url (url);
1654
1655         gtk_show_uri (parent ? gtk_widget_get_screen (parent) : NULL, real_url,
1656                       gtk_get_current_event_time (), &error);
1657
1658         if (error) {
1659                 GtkWidget *dialog;
1660
1661                 dialog = gtk_message_dialog_new (NULL, 0,
1662                                                  GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
1663                                                  _("Unable to open URI"));
1664                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
1665                                                           "%s", error->message);
1666
1667                 g_signal_connect (dialog, "response",
1668                                   G_CALLBACK (gtk_widget_destroy),
1669                                   NULL);
1670                 gtk_window_present (GTK_WINDOW (dialog));
1671
1672                 g_clear_error (&error);
1673         }
1674
1675         g_free (real_url);
1676 }
1677
1678 void
1679 empathy_send_file (EmpathyContact *contact, GFile *file)
1680 {
1681         EmpathyFTFactory *factory;
1682         GtkRecentManager *manager;
1683         gchar *uri;
1684
1685         g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1686         g_return_if_fail (G_IS_FILE (file));
1687
1688         factory = empathy_ft_factory_dup_singleton ();
1689
1690         empathy_ft_factory_new_transfer_outgoing (factory, contact, file);
1691
1692         uri = g_file_get_uri (file);
1693         manager = gtk_recent_manager_get_default ();
1694         gtk_recent_manager_add_item (manager, uri);
1695         g_free (uri);
1696
1697         g_object_unref (factory);
1698 }
1699
1700 void
1701 empathy_send_file_from_uri_list (EmpathyContact *contact, const gchar *uri_list)
1702 {
1703         const gchar *nl;
1704         GFile *file;
1705
1706         /* Only handle a single file for now.  It would be wicked cool to be
1707            able to do multiple files, offering to zip them or whatever like
1708            nautilus-sendto does.  Note that text/uri-list is defined to have
1709            each line terminated by \r\n, but we can be tolerant of applications
1710            that only use \n or don't terminate single-line entries.
1711         */
1712         nl = strstr (uri_list, "\r\n");
1713         if (!nl) {
1714                 nl = strchr (uri_list, '\n');
1715         }
1716         if (nl) {
1717                 gchar *uri = g_strndup (uri_list, nl - uri_list);
1718                 file = g_file_new_for_uri (uri);
1719                 g_free (uri);
1720         }
1721         else {
1722                 file = g_file_new_for_uri (uri_list);
1723         }
1724
1725         empathy_send_file (contact, file);
1726
1727         g_object_unref (file);
1728 }
1729
1730 static void
1731 file_manager_send_file_response_cb (GtkDialog      *widget,
1732                                     gint            response_id,
1733                                     EmpathyContact *contact)
1734 {
1735         GFile *file;
1736
1737         if (response_id == GTK_RESPONSE_OK) {
1738                 file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (widget));
1739
1740                 empathy_send_file (contact, file);
1741
1742                 g_object_unref (file);
1743         }
1744
1745         gtk_widget_destroy (GTK_WIDGET (widget));
1746 }
1747
1748 void
1749 empathy_send_file_with_file_chooser (EmpathyContact *contact)
1750 {
1751         GtkWidget               *widget;
1752         GtkWidget               *button;
1753
1754         g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1755
1756         DEBUG ("Creating selection file chooser");
1757
1758         widget = gtk_file_chooser_dialog_new (_("Select a file"),
1759                                               NULL,
1760                                               GTK_FILE_CHOOSER_ACTION_OPEN,
1761                                               GTK_STOCK_CANCEL,
1762                                               GTK_RESPONSE_CANCEL,
1763                                               NULL);
1764
1765         /* send button */
1766         button = gtk_button_new_with_mnemonic (_("_Send"));
1767         gtk_button_set_image (GTK_BUTTON (button),
1768                 gtk_image_new_from_icon_name (EMPATHY_IMAGE_DOCUMENT_SEND,
1769                                               GTK_ICON_SIZE_BUTTON));
1770         gtk_widget_show (button);
1771         gtk_dialog_add_action_widget (GTK_DIALOG (widget), button,
1772                                       GTK_RESPONSE_OK);
1773         gtk_widget_set_can_default (button, TRUE);
1774         gtk_dialog_set_default_response (GTK_DIALOG (widget),
1775                                          GTK_RESPONSE_OK);
1776
1777         gtk_file_chooser_set_local_only (GTK_FILE_CHOOSER (widget), FALSE);
1778
1779         gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (widget),
1780                 g_get_home_dir ());
1781
1782         g_signal_connect (widget, "response",
1783                           G_CALLBACK (file_manager_send_file_response_cb),
1784                           contact);
1785
1786         gtk_widget_show (widget);
1787 }
1788
1789 static void
1790 file_manager_receive_file_response_cb (GtkDialog *dialog,
1791                                        GtkResponseType response,
1792                                        EmpathyFTHandler *handler)
1793 {
1794         EmpathyFTFactory *factory;
1795         GFile *file;
1796
1797         if (response == GTK_RESPONSE_OK) {
1798                 factory = empathy_ft_factory_dup_singleton ();
1799                 file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
1800
1801                 empathy_ft_factory_set_destination_for_incoming_handler
1802                         (factory, handler, file);
1803
1804                 g_object_unref (factory);
1805                 g_object_unref (file);
1806         } else {
1807                 /* unref the handler, as we dismissed the file chooser,
1808                  * and refused the transfer.
1809                  */
1810                 g_object_unref (handler);
1811         }
1812
1813         gtk_widget_destroy (GTK_WIDGET (dialog));
1814 }
1815
1816 void
1817 empathy_receive_file_with_file_chooser (EmpathyFTHandler *handler)
1818 {
1819         GtkWidget *widget;
1820         const gchar *dir;
1821         EmpathyContact *contact;
1822         gchar *title;
1823
1824         contact = empathy_ft_handler_get_contact (handler);
1825         g_assert (contact != NULL);
1826
1827         title = g_strdup_printf (_("Incoming file from %s"),
1828                 empathy_contact_get_name (contact));
1829
1830         widget = gtk_file_chooser_dialog_new (title,
1831                                               NULL,
1832                                               GTK_FILE_CHOOSER_ACTION_SAVE,
1833                                               GTK_STOCK_CANCEL,
1834                                               GTK_RESPONSE_CANCEL,
1835                                               GTK_STOCK_SAVE,
1836                                               GTK_RESPONSE_OK,
1837                                               NULL);
1838         gtk_file_chooser_set_current_name (GTK_FILE_CHOOSER (widget),
1839                 empathy_ft_handler_get_filename (handler));
1840         gtk_file_chooser_set_do_overwrite_confirmation
1841                 (GTK_FILE_CHOOSER (widget), TRUE);
1842
1843         dir = g_get_user_special_dir (G_USER_DIRECTORY_DOWNLOAD);
1844         if (dir == NULL)
1845                 /* Fallback to $HOME if $XDG_DOWNLOAD_DIR is not set */
1846                 dir = g_get_home_dir ();
1847
1848         gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (widget), dir);
1849
1850         g_signal_connect (widget, "response",
1851                 G_CALLBACK (file_manager_receive_file_response_cb), handler);
1852
1853         gtk_widget_show (widget);
1854         g_free (title);
1855 }