libempathy-gtk/empathy-avatar-chooser.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2006-2007 Imendio AB.
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Authors: Based on Novell's e-image-chooser.
  21  *          Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <string.h>
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-utils.h>
  33 #include "empathy-avatar-chooser.h"
  34 #include "empathy-conf.h"
  35 #include "empathy-ui-utils.h"
  36
  37 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  38 #include <libempathy/empathy-debug.h>
  39
  40 #define AVATAR_SIZE_SAVE 96
  41 #define AVATAR_SIZE_VIEW 64
  42 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  43
  44 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  45 typedef struct {
  46         EmpathyContactFactory   *contact_factory;
  47         McAccount               *account;
  48         EmpathyTpContactFactory *tp_contact_factory;
  49
  50         gulong ready_handler_id;
  51
  52         EmpathyAvatar *avatar;
  53 } EmpathyAvatarChooserPriv;
  54
  55 static void       avatar_chooser_finalize              (GObject              *object);
  56 static void       avatar_chooser_set_account           (EmpathyAvatarChooser *self,
  57                                                         McAccount            *account);
  58 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *chooser,
  59                                                         gchar                *data,
  60                                                         gsize                 size,
  61                                                         gboolean              set_locally);
  62 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  63                                                         GdkDragContext       *context,
  64                                                         gint                  x,
  65                                                         gint                  y,
  66                                                         guint                 time,
  67                                                         EmpathyAvatarChooser *chooser);
  68 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  69                                                         GdkDragContext       *context,
  70                                                         guint                 time,
  71                                                         EmpathyAvatarChooser *chooser);
  72 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  73                                                         GdkDragContext       *context,
  74                                                         gint                  x,
  75                                                         gint                  y,
  76                                                         guint                 time,
  77                                                         EmpathyAvatarChooser *chooser);
  78 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  79                                                         GdkDragContext       *context,
  80                                                         gint                  x,
  81                                                         gint                  y,
  82                                                         GtkSelectionData     *selection_data,
  83                                                         guint                 info,
  84                                                         guint                 time,
  85                                                         EmpathyAvatarChooser *chooser);
  86 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  87                                                         EmpathyAvatarChooser *chooser);
  88
  89 enum {
  90         CHANGED,
  91         LAST_SIGNAL
  92 };
  93
  94 enum {
  95         PROP_0,
  96         PROP_ACCOUNT
  97 };
  98
  99 static guint signals [LAST_SIGNAL];
 100
 101 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 102
 103 /*
 104  * Drag and drop stuff
 105  */
 106 #define URI_LIST_TYPE "text/uri-list"
 107
 108 enum DndTargetType {
 109         DND_TARGET_TYPE_URI_LIST
 110 };
 111
 112 static const GtkTargetEntry drop_types[] = {
 113         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 114 };
 115
 116 static void
 117 avatar_chooser_get_property (GObject    *object,
 118                              guint       param_id,
 119                              GValue     *value,
 120                              GParamSpec *pspec)
 121 {
 122         EmpathyAvatarChooserPriv *priv = GET_PRIV (object);
 123
 124         switch (param_id) {
 125         case PROP_ACCOUNT:
 126                 g_value_set_object (value, priv->account);
 127                 break;
 128         default:
 129                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 130                 break;
 131         }
 132 }
 133
 134 static void
 135 avatar_chooser_set_property (GObject      *object,
 136                              guint         param_id,
 137                              const GValue *value,
 138                              GParamSpec   *pspec)
 139 {
 140         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 141
 142         switch (param_id) {
 143         case PROP_ACCOUNT:
 144                 avatar_chooser_set_account (self, g_value_get_object (value));
 145                 break;
 146         default:
 147                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 148                 break;
 149         }
 150 }
 151
 152 static void
 153 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 154 {
 155         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 156         GParamSpec *param_spec;
 157
 158         object_class->finalize = avatar_chooser_finalize;
 159         object_class->get_property = avatar_chooser_get_property;
 160         object_class->set_property = avatar_chooser_set_property;
 161
 162         signals[CHANGED] =
 163                 g_signal_new ("changed",
 164                               G_TYPE_FROM_CLASS (klass),
 165                               G_SIGNAL_RUN_LAST,
 166                               0,
 167                               NULL, NULL,
 168                               g_cclosure_marshal_VOID__VOID,
 169                               G_TYPE_NONE, 0);
 170
 171         param_spec = g_param_spec_object ("account",
 172                                           "McAccount",
 173                                           "McAccount whose avatar should be "
 174                                           "shown and modified by this widget",
 175                                           MC_TYPE_ACCOUNT,
 176                                           G_PARAM_READWRITE |
 177                                           G_PARAM_STATIC_STRINGS);
 178         g_object_class_install_property (object_class,
 179                                          PROP_ACCOUNT,
 180                                          param_spec);
 181
 182         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 183 }
 184
 185 static void
 186 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 187 {
 188         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 189                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 190
 191         chooser->priv = priv;
 192         gtk_drag_dest_set (GTK_WIDGET (chooser),
 193                            GTK_DEST_DEFAULT_ALL,
 194                            drop_types,
 195                            G_N_ELEMENTS (drop_types),
 196                            GDK_ACTION_COPY);
 197
 198         g_signal_connect (chooser, "drag-motion",
 199                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 200                           chooser);
 201         g_signal_connect (chooser, "drag-leave",
 202                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 203                           chooser);
 204         g_signal_connect (chooser, "drag-drop",
 205                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 206                           chooser);
 207         g_signal_connect (chooser, "drag-data-received",
 208                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 209                           chooser);
 210         g_signal_connect (chooser, "clicked",
 211                           G_CALLBACK (avatar_chooser_clicked_cb),
 212                           chooser);
 213
 214         priv->contact_factory = empathy_contact_factory_new ();
 215
 216         empathy_avatar_chooser_set (chooser, NULL);
 217 }
 218
 219 static void
 220 avatar_chooser_finalize (GObject *object)
 221 {
 222         EmpathyAvatarChooserPriv *priv;
 223
 224         priv = GET_PRIV (object);
 225
 226         avatar_chooser_set_account (EMPATHY_AVATAR_CHOOSER (object), NULL);
 227         g_assert (priv->account == NULL && priv->tp_contact_factory == NULL);
 228
 229         g_object_unref (priv->contact_factory);
 230
 231         if (priv->avatar != NULL) {
 232                 empathy_avatar_unref (priv->avatar);
 233         }
 234
 235         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 236 }
 237
 238 static void
 239 avatar_chooser_tp_cf_ready_cb (EmpathyTpContactFactory *tp_cf,
 240                                GParamSpec              *unused,
 241                                EmpathyAvatarChooser    *self)
 242 {
 243         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 244         gboolean ready;
 245
 246         /* sanity check that we're listening on the right ETpCF */
 247         g_assert (priv->tp_contact_factory == tp_cf);
 248
 249         ready = empathy_tp_contact_factory_is_ready (tp_cf);
 250         gtk_widget_set_sensitive (GTK_WIDGET (self), ready);
 251 }
 252
 253 static void
 254 avatar_chooser_set_account (EmpathyAvatarChooser *self,
 255                             McAccount            *account)
 256 {
 257         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 258
 259         if (priv->account != NULL) {
 260                 g_object_unref (priv->account);
 261                 priv->account = NULL;
 262
 263                 g_assert (priv->tp_contact_factory != NULL);
 264
 265                 g_signal_handler_disconnect (priv->tp_contact_factory,
 266                         priv->ready_handler_id);
 267                 priv->ready_handler_id = 0;
 268
 269                 g_object_unref (priv->tp_contact_factory);
 270                 priv->tp_contact_factory = NULL;
 271         }
 272
 273         if (account != NULL) {
 274                 priv->account = g_object_ref (account);
 275                 priv->tp_contact_factory = g_object_ref (
 276                         empathy_contact_factory_get_tp_factory (
 277                                 priv->contact_factory, priv->account));
 278
 279                 priv->ready_handler_id = g_signal_connect (
 280                         priv->tp_contact_factory, "notify::ready",
 281                         G_CALLBACK (avatar_chooser_tp_cf_ready_cb), self);
 282                 avatar_chooser_tp_cf_ready_cb (priv->tp_contact_factory, NULL,
 283                         self);
 284         }
 285 }
 286
 287 static gboolean
 288 str_in_strv (gchar  *str,
 289              gchar **strv)
 290 {
 291         if (strv == NULL) {
 292                 return FALSE;
 293         }
 294
 295         while (*strv != NULL) {
 296                 if (g_str_equal (str, *strv)) {
 297                         return TRUE;
 298                 }
 299                 strv++;
 300         }
 301         return FALSE;
 302 }
 303
 304 /* The caller must free the strings stored in satisfactory_format_name and
 305  * satisfactory_mime_type.
 306  */
 307 static gboolean
 308 can_satisfy_mime_type_requirements (gchar **accepted_mime_types,
 309                                     gchar **satisfactory_format_name,
 310                                     gchar **satisfactory_mime_type)
 311 {
 312         GSList  *formats;
 313         GSList  *l;
 314         gchar  **strv;
 315         gchar   *name = NULL,
 316                 *type = NULL;
 317         gboolean done = FALSE;
 318
 319         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 320                 return FALSE;
 321         }
 322
 323         g_assert (satisfactory_format_name != NULL);
 324         g_assert (satisfactory_mime_type != NULL);
 325
 326         formats = gdk_pixbuf_get_formats ();
 327
 328         for (l = formats; !done && l != NULL; l = l->next) {
 329                 GdkPixbufFormat *format = l->data;
 330                 gchar **format_mime_types;
 331
 332                 if (!gdk_pixbuf_format_is_writable (format)) {
 333                         continue;
 334                 }
 335
 336                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 337                 for (strv = format_mime_types; *strv != NULL; strv++) {
 338                         if (str_in_strv (*strv, accepted_mime_types)) {
 339                                 name = gdk_pixbuf_format_get_name (format);
 340                                 type = g_strdup (*strv);
 341                                 done = TRUE;
 342                                 break;
 343                         }
 344                 }
 345                 g_strfreev (format_mime_types);
 346         }
 347
 348         g_slist_free (formats);
 349
 350         if (done) {
 351                 if (satisfactory_format_name != NULL) {
 352                         *satisfactory_format_name = name;
 353                 } else {
 354                         g_free (name);
 355                 }
 356                 if (satisfactory_mime_type != NULL) {
 357                         *satisfactory_mime_type = type;
 358                 } else {
 359                         g_free (type);
 360                 }
 361                 return TRUE;
 362         } else {
 363                 /* check we're not leaking. */
 364                 g_assert (name == NULL && type == NULL);
 365                 return FALSE;
 366         }
 367 }
 368
 369 static EmpathyAvatar *
 370 avatar_chooser_convert (EmpathyAvatarChooser *chooser,
 371                         GdkPixbuf            *pixbuf_scaled,
 372                         gchar               **mime_types,
 373                         gsize                 max_size)
 374 {
 375         gchar         *format_name = NULL, *new_mime_type = NULL;
 376         gchar         *converted_image_data = NULL;
 377         gsize          converted_image_size = 0;
 378         EmpathyAvatar *converted_avatar = NULL;
 379         gboolean       saved;
 380         GError        *error = NULL;
 381
 382         if (!can_satisfy_mime_type_requirements (mime_types, &format_name,
 383                                                  &new_mime_type)) {
 384                 DEBUG ("Mon dieu! Can't convert to any acceptable format!");
 385                 return NULL;
 386         }
 387
 388         saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled, &converted_image_data,
 389                 &converted_image_size, format_name, &error, NULL);
 390         g_free (format_name);
 391
 392         if (!saved) {
 393                 DEBUG ("Couldn't convert image: %s", error->message);
 394                 g_error_free (error);
 395
 396                 g_free (new_mime_type);
 397                 return NULL;
 398         }
 399
 400         /* Takes ownership of new_mime_type */
 401         converted_avatar = empathy_avatar_new (converted_image_data,
 402                 converted_image_size, new_mime_type, NULL);
 403
 404         if (max_size > 0 && converted_avatar->len > max_size) {
 405                 /* FIXME: We could try converting to a different format; in
 406                  *        particular, try converting to jpeg with increasingly
 407                  *        high compression (if jpeg is supported). Not sure how
 408                  *        much we care.
 409                  */
 410                 DEBUG ("Converted the image, but the new filesize is too big");
 411
 412                 empathy_avatar_unref (converted_avatar);
 413                 converted_avatar = NULL;
 414         }
 415
 416         return converted_avatar;
 417 }
 418
 419 static EmpathyAvatar *
 420 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 421                                         GdkPixbuf            *pixbuf,
 422                                         EmpathyAvatar        *avatar)
 423 {
 424         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 425         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 426         gint                      max_width = 0, max_height = 0, max_size = 0;
 427         gchar                   **mime_types = NULL;
 428         gboolean                  needs_conversion = FALSE;
 429         GdkPixbuf                *pixbuf_scaled = NULL;
 430
 431         /* This should only be called if the user is setting a new avatar,
 432          * which should only be allowed once the avatar requirements have been
 433          * discovered.
 434          */
 435         g_return_val_if_fail (tp_cf != NULL, NULL);
 436         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 437                 NULL);
 438
 439         g_object_get (tp_cf,
 440                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 441                 "avatar-max-width", &max_width,
 442                 "avatar-max-height", &max_height,
 443                 "avatar-max-size", &max_size,
 444                 NULL);
 445
 446         /* If the avatar's not already the right type, it needs converting. */
 447         if (!str_in_strv (avatar->format, mime_types)) {
 448                 needs_conversion = TRUE;
 449         }
 450
 451         /* If _scale_down_if_necessary yields a new pixbuf, then it needed
 452          * scaling.  If it's the same pixbuf, it did not, and did no extra work
 453          * beyond checking the dimensions.  Hence, we call it even if
 454          * needs_conversion is already TRUE, rather than duplicating the
 455          * dimension checking code here, as it's no more expensive than
 456          * checking the dimensions first in the case where no scaling is
 457          * necessary.
 458          */
 459         pixbuf_scaled = empathy_pixbuf_scale_down_if_necessary (pixbuf,
 460                 MIN(max_width, max_height));
 461         if (pixbuf_scaled != pixbuf) {
 462                 needs_conversion = TRUE;
 463         }
 464
 465         if (max_size > 0 && avatar->len > max_size) {
 466                 needs_conversion = TRUE;
 467         }
 468
 469         if (needs_conversion) {
 470                 avatar = avatar_chooser_convert (chooser, pixbuf_scaled,
 471                         mime_types, max_size);
 472         } else {
 473                 /* Just return another reference to the avatar passed in. */
 474                 avatar = empathy_avatar_ref (avatar);
 475         }
 476
 477         g_object_unref (pixbuf_scaled);
 478         g_strfreev (mime_types);
 479         return avatar;
 480 }
 481
 482 static void
 483 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 484 {
 485         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 486         GtkWidget *image;
 487
 488         if (priv->avatar == NULL) {
 489                 return;
 490         }
 491
 492         empathy_avatar_unref (priv->avatar);
 493         priv->avatar = NULL;
 494
 495         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 496         gtk_button_set_image (GTK_BUTTON (chooser), image);
 497         g_signal_emit (chooser, signals[CHANGED], 0);
 498 }
 499
 500 static void
 501 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 502                           gchar                *data,
 503                           gsize                 size,
 504                           gboolean              set_locally)
 505 {
 506         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 507
 508         GdkPixbuf     *pixbuf, *pixbuf_view;
 509         GtkWidget     *image;
 510         EmpathyAvatar *avatar = NULL;
 511         gchar         *mime_type = NULL;
 512
 513         if (data == NULL) {
 514                 avatar_chooser_clear_image (chooser);
 515                 g_free (data);
 516                 return;
 517         }
 518
 519         pixbuf = empathy_pixbuf_from_data (data, size, &mime_type);
 520         if (pixbuf == NULL) {
 521                 g_free (data);
 522                 return;
 523         }
 524
 525         /* avatar takes ownership of data and mime_type */
 526         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 527
 528         if (set_locally) {
 529                 EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
 530                         chooser, pixbuf, avatar);
 531                 empathy_avatar_unref (avatar);
 532                 avatar = conv;
 533         }
 534
 535         if (avatar == NULL) {
 536                 /* An error occured; don't change the avatar. */
 537                 return;
 538         }
 539
 540         if (priv->avatar != NULL) {
 541                 empathy_avatar_unref (priv->avatar);
 542         }
 543         priv->avatar = avatar;
 544
 545         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 546         image = gtk_image_new_from_pixbuf (pixbuf_view);
 547
 548         gtk_button_set_image (GTK_BUTTON (chooser), image);
 549         g_signal_emit (chooser, signals[CHANGED], 0);
 550
 551         g_object_unref (pixbuf_view);
 552         g_object_unref (pixbuf);
 553 }
 554
 555 static void
 556 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 557                                     const gchar          *filename)
 558 {
 559         gchar  *image_data = NULL;
 560         gsize   image_size = 0;
 561         GError *error = NULL;
 562
 563         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 564                 DEBUG ("Failed to load image from '%s': %s", filename,
 565                         error ? error->message : "No error given");
 566
 567                 g_clear_error (&error);
 568                 return;
 569         }
 570
 571         avatar_chooser_set_image (chooser, image_data, image_size, TRUE);
 572 }
 573
 574 static gboolean
 575 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 576                               GdkDragContext     *context,
 577                               gint                x,
 578                               gint                y,
 579                               guint               time,
 580                               EmpathyAvatarChooser *chooser)
 581 {
 582         EmpathyAvatarChooserPriv *priv;
 583         GList                  *p;
 584
 585         priv = GET_PRIV (chooser);
 586
 587         for (p = context->targets; p != NULL; p = p->next) {
 588                 gchar *possible_type;
 589
 590                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 591
 592                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 593                         g_free (possible_type);
 594                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 595
 596                         return TRUE;
 597                 }
 598
 599                 g_free (possible_type);
 600         }
 601
 602         return FALSE;
 603 }
 604
 605 static void
 606 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 607                              GdkDragContext     *context,
 608                              guint               time,
 609                              EmpathyAvatarChooser *chooser)
 610 {
 611 }
 612
 613 static gboolean
 614 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 615                             GdkDragContext     *context,
 616                             gint                x,
 617                             gint                y,
 618                             guint               time,
 619                             EmpathyAvatarChooser *chooser)
 620 {
 621         EmpathyAvatarChooserPriv *priv;
 622         GList                  *p;
 623
 624         priv = GET_PRIV (chooser);
 625
 626         if (context->targets == NULL) {
 627                 return FALSE;
 628         }
 629
 630         for (p = context->targets; p != NULL; p = p->next) {
 631                 char *possible_type;
 632
 633                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 634                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 635                         g_free (possible_type);
 636                         gtk_drag_get_data (widget, context,
 637                                            GDK_POINTER_TO_ATOM (p->data),
 638                                            time);
 639
 640                         return TRUE;
 641                 }
 642
 643                 g_free (possible_type);
 644         }
 645
 646         return FALSE;
 647 }
 648
 649 static void
 650 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 651                                      GdkDragContext     *context,
 652                                      gint                x,
 653                                      gint                y,
 654                                      GtkSelectionData   *selection_data,
 655                                      guint               info,
 656                                      guint               time,
 657                                      EmpathyAvatarChooser *chooser)
 658 {
 659         gchar    *target_type;
 660         gboolean  handled = FALSE;
 661
 662         target_type = gdk_atom_name (selection_data->target);
 663         if (!strcmp (target_type, URI_LIST_TYPE)) {
 664                 GFile            *file;
 665                 GFileInputStream *input_stream;
 666                 gchar            *nl;
 667                 gchar            *data = NULL;
 668
 669                 nl = strstr (selection_data->data, "\r\n");
 670                 if (nl) {
 671                         gchar *uri;
 672
 673                         uri = g_strndup (selection_data->data,
 674                                          nl - (gchar*) selection_data->data);
 675
 676                         file = g_file_new_for_uri (uri);
 677                         g_free (uri);
 678                 } else {
 679                         file = g_file_new_for_uri (selection_data->data);
 680                 }
 681
 682                 input_stream = g_file_read (file, NULL, NULL);
 683
 684                 if (input_stream != NULL) {
 685                         GFileInfo *info;
 686
 687                         info = g_file_query_info (file,
 688                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 689                                                   0, NULL, NULL);
 690                         if (info != NULL) {
 691                                 goffset size;
 692                                 gssize bytes_read;
 693
 694                                 size = g_file_info_get_size (info);
 695                                 data = g_malloc (size);
 696
 697                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 698                                                                   data, size,
 699                                                                   NULL, NULL);
 700                                 if (bytes_read != -1) {
 701                                         avatar_chooser_set_image (chooser,
 702                                                                   data,
 703                                                                   (gsize) bytes_read,
 704                                                                   TRUE);
 705                                         handled = TRUE;
 706                                 }
 707
 708                                 g_free (data);
 709                                 g_object_unref (info);
 710                         }
 711
 712                         g_object_unref (input_stream);
 713                 }
 714
 715                 g_object_unref (file);
 716         }
 717
 718         gtk_drag_finish (context, handled, FALSE, time);
 719 }
 720
 721 static void
 722 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 723                                   EmpathyAvatarChooser *chooser)
 724 {
 725         gchar *filename;
 726
 727         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 728
 729         if (filename) {
 730                 GtkWidget *image;
 731                 GdkPixbuf *pixbuf = NULL;
 732                 GdkPixbuf *scaled_pixbuf;
 733
 734                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 735
 736                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 737
 738                 if (pixbuf) {
 739                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 740                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 741                         g_object_unref (scaled_pixbuf);
 742                         g_object_unref (pixbuf);
 743                 } else {
 744                         gtk_image_set_from_stock (GTK_IMAGE (image),
 745                                                   "gtk-dialog-question",
 746                                                   GTK_ICON_SIZE_DIALOG);
 747                 }
 748         }
 749
 750         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 751 }
 752
 753 static void
 754 avatar_chooser_response_cb (GtkWidget            *widget,
 755                             gint                  response,
 756                             EmpathyAvatarChooser *chooser)
 757 {
 758         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 759
 760         if (response == GTK_RESPONSE_CANCEL) {
 761                 goto out;
 762         }
 763
 764         /* Check if we went non-ready since displaying the dialog. */
 765         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 766                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 767                 goto out;
 768         }
 769
 770         if (response == GTK_RESPONSE_OK) {
 771                 gchar *filename;
 772                 gchar *path;
 773
 774                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 775                 avatar_chooser_set_image_from_file (chooser, filename);
 776                 g_free (filename);
 777
 778                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 779                 if (path) {
 780                         empathy_conf_set_string (empathy_conf_get (),
 781                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 782                                                  path);
 783                         g_free (path);
 784                 }
 785         }
 786         else if (response == GTK_RESPONSE_NO) {
 787                 /* This corresponds to "No Image", not to "Cancel" */
 788                 avatar_chooser_clear_image (chooser);
 789         }
 790
 791 out:
 792         gtk_widget_destroy (widget);
 793 }
 794
 795 static void
 796 avatar_chooser_clicked_cb (GtkWidget            *button,
 797                            EmpathyAvatarChooser *chooser)
 798 {
 799         GtkFileChooser *chooser_dialog;
 800         GtkWidget      *image;
 801         gchar          *saved_dir = NULL;
 802         const gchar    *default_dir = DEFAULT_DIR;
 803         const gchar    *pics_dir;
 804         GtkFileFilter  *filter;
 805
 806         chooser_dialog = GTK_FILE_CHOOSER (
 807                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 808                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 809                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 810                                              _("No Image"),
 811                                              GTK_RESPONSE_NO,
 812                                              GTK_STOCK_CANCEL,
 813                                              GTK_RESPONSE_CANCEL,
 814                                              GTK_STOCK_OPEN,
 815                                              GTK_RESPONSE_OK,
 816                                              NULL));
 817
 818         /* Get special dirs */
 819         empathy_conf_get_string (empathy_conf_get (),
 820                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 821                                  &saved_dir);
 822         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 823                 g_free (saved_dir);
 824                 saved_dir = NULL;
 825         }
 826         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 827                 default_dir = NULL;
 828         }
 829         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 830         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 831                 pics_dir = NULL;
 832         }
 833
 834         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 835         if (saved_dir) {
 836                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 837         }
 838         else if (pics_dir) {
 839                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 840         }
 841         else if (default_dir) {
 842                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 843         } else {
 844                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 845         }
 846
 847         /* Add shortcuts to special dirs */
 848         if (saved_dir) {
 849                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 850         }
 851         else if (pics_dir) {
 852                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 853         }
 854         if (default_dir) {
 855                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 856         }
 857
 858         /* Setup preview image */
 859         image = gtk_image_new ();
 860         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 861         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 862         gtk_widget_show (image);
 863         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 864         g_signal_connect (chooser_dialog, "update-preview",
 865                           G_CALLBACK (avatar_chooser_update_preview_cb),
 866                           chooser);
 867
 868         /* Setup filers */
 869         filter = gtk_file_filter_new ();
 870         gtk_file_filter_set_name (filter, _("Images"));
 871         gtk_file_filter_add_pixbuf_formats (filter);
 872         gtk_file_chooser_add_filter (chooser_dialog, filter);
 873         filter = gtk_file_filter_new ();
 874         gtk_file_filter_set_name (filter, _("All Files"));
 875         gtk_file_filter_add_pattern(filter, "*");
 876         gtk_file_chooser_add_filter (chooser_dialog, filter);
 877
 878         /* Setup response */
 879         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 880         g_signal_connect (chooser_dialog, "response",
 881                           G_CALLBACK (avatar_chooser_response_cb),
 882                           chooser);
 883
 884         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 885         g_free (saved_dir);
 886 }
 887
 888 GtkWidget *
 889 empathy_avatar_chooser_new ()
 890 {
 891         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 892 }
 893
 894 /* FIXME: when the avatar passed to this function actually can be relied upon to
 895  * contain a mime type, we can probably just ref it and store it.
 896  */
 897 void
 898 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 899                             EmpathyAvatar        *avatar)
 900 {
 901         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 902
 903         if (avatar != NULL) {
 904                 gchar *data = g_memdup (avatar->data, avatar->len);
 905                 avatar_chooser_set_image (chooser, data, avatar->len, FALSE);
 906         } else {
 907                 avatar_chooser_clear_image (chooser);
 908         }
 909 }
 910
 911 void
 912 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 913                                        const gchar          **data,
 914                                        gsize                 *data_size,
 915                                        const gchar          **mime_type)
 916 {
 917         EmpathyAvatarChooserPriv *priv;
 918
 919         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 920
 921         priv = GET_PRIV (chooser);
 922
 923         if (priv->avatar != NULL) {
 924                 if (data != NULL) {
 925                         *data = priv->avatar->data;
 926                 }
 927                 if (data_size != NULL) {
 928                         *data_size = priv->avatar->len;
 929                 }
 930                 if (mime_type != NULL) {
 931                         *mime_type = priv->avatar->format;
 932                 }
 933         } else {
 934                 if (data != NULL) {
 935                         *data = NULL;
 936                 }
 937                 if (data_size != NULL) {
 938                         *data_size = 0;
 939                 }
 940                 if (mime_type != NULL) {
 941                         *mime_type = NULL;
 942                 }
 943         }
 944 }
 945