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         {
 297                 if (g_str_equal (str, *strv)) {
 298                         return TRUE;
 299                 }
 300                 strv++;
 301         }
 302         return FALSE;
 303 }
 304
 305 /* The caller must free the strings stored in satisfactory_format_name and
 306  * satisfactory_mime_type.
 307  */
 308 static gboolean
 309 can_satisfy_mime_type_requirements (gchar **accepted_mime_types,
 310                                     gchar **satisfactory_format_name,
 311                                     gchar **satisfactory_mime_type)
 312 {
 313         GSList *formats;
 314         GSList *i;
 315         gchar **j;
 316         gboolean done = FALSE;
 317
 318         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 319                 return FALSE;
 320         }
 321
 322         g_assert (satisfactory_format_name != NULL);
 323         g_assert (satisfactory_mime_type != NULL);
 324
 325         formats = gdk_pixbuf_get_formats ();
 326
 327         for (i = formats; !done && i != NULL; i = i->next) {
 328                 GdkPixbufFormat *format = i->data;
 329                 gchar **format_mime_types;
 330
 331                 if (!gdk_pixbuf_format_is_writable (format)) {
 332                         continue;
 333                 }
 334
 335                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 336                 for (j = accepted_mime_types; *j != NULL; j++) {
 337                         if (str_in_strv (*j, format_mime_types)) {
 338                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 339                                 *satisfactory_mime_type = g_strdup (*j);
 340                                 done = TRUE;
 341                                 break;
 342                         }
 343                 }
 344                 g_strfreev (format_mime_types);
 345         }
 346
 347         g_slist_free (formats);
 348
 349         return done;
 350 }
 351
 352 static EmpathyAvatar *
 353 avatar_chooser_convert (EmpathyAvatarChooser *chooser,
 354                         GdkPixbuf            *pixbuf_scaled,
 355                         gchar               **mime_types,
 356                         gsize                 max_size)
 357 {
 358         gchar         *format_name = NULL, *new_mime_type = NULL;
 359         gchar         *converted_image_data = NULL;
 360         gsize          converted_image_size = 0;
 361         EmpathyAvatar *converted_avatar = NULL;
 362         gboolean       saved;
 363         GError        *error = NULL;
 364
 365         if (!can_satisfy_mime_type_requirements (mime_types, &format_name,
 366                                                  &new_mime_type)) {
 367                 DEBUG ("Mon dieu! Can't convert to any acceptable format!");
 368                 return NULL;
 369         }
 370
 371         saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled, &converted_image_data,
 372                 &converted_image_size, format_name, &error, NULL);
 373         g_free (format_name);
 374
 375         if (!saved) {
 376                 DEBUG ("Couldn't convert image: %s", error->message);
 377                 g_error_free (error);
 378
 379                 g_free (new_mime_type);
 380                 return NULL;
 381         }
 382
 383         /* Takes ownership of new_mime_type */
 384         converted_avatar = empathy_avatar_new (converted_image_data,
 385                 converted_image_size, new_mime_type, NULL);
 386
 387         if (max_size > 0 && converted_avatar->len > max_size) {
 388                 /* FIXME: We could try converting to a different format; in
 389                  *        particular, try converting to jpeg with increasingly
 390                  *        high compression (if jpeg is supported). Not sure how
 391                  *        much we care.
 392                  */
 393                 DEBUG ("Converted the image, but the new filesize is too big");
 394
 395                 empathy_avatar_unref (converted_avatar);
 396                 converted_avatar = NULL;
 397         }
 398
 399         return converted_avatar;
 400 }
 401
 402 static EmpathyAvatar *
 403 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 404                                         GdkPixbuf            *pixbuf,
 405                                         EmpathyAvatar        *avatar)
 406 {
 407         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 408         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 409         gint                      max_width = 0, max_height = 0, max_size = 0;
 410         gchar                   **mime_types = NULL;
 411         gboolean                  needs_conversion = FALSE;
 412         GdkPixbuf                *pixbuf_scaled = NULL;
 413
 414         /* This should only be called if the user is setting a new avatar,
 415          * which should only be allowed once the avatar requirements have been
 416          * discovered.
 417          */
 418         g_return_val_if_fail (tp_cf != NULL, NULL);
 419         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 420                 NULL);
 421
 422         g_object_get (tp_cf,
 423                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 424                 "avatar-max-width", &max_width,
 425                 "avatar-max-height", &max_height,
 426                 "avatar-max-size", &max_size,
 427                 NULL);
 428
 429         /* If the avatar's not already the right type, it needs converting. */
 430         if (!str_in_strv (avatar->format, mime_types)) {
 431                 needs_conversion = TRUE;
 432         }
 433
 434         /* If scaling down the pixbuf to fit the dimensions yields a new
 435          * pixbuf, then it needed scaling. if it's the same pixbuf, it did not.
 436          */
 437         pixbuf_scaled = empathy_pixbuf_scale_down_if_necessary (pixbuf,
 438                 MIN(max_width, max_height));
 439         if (pixbuf_scaled != pixbuf) {
 440                 needs_conversion = TRUE;
 441         }
 442
 443         if (max_size > 0 && avatar->len > max_size) {
 444                 needs_conversion = TRUE;
 445         }
 446
 447         if (needs_conversion) {
 448                 avatar = avatar_chooser_convert (chooser, pixbuf_scaled,
 449                         mime_types, max_size);
 450         } else {
 451                 /* Just return another reference to the avatar passed in. */
 452                 avatar = empathy_avatar_ref (avatar);
 453         }
 454
 455         g_object_unref (pixbuf_scaled);
 456         g_strfreev (mime_types);
 457         return avatar;
 458 }
 459
 460 static void
 461 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 462 {
 463         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 464         GtkWidget *image;
 465
 466         if (priv->avatar == NULL) {
 467                 return;
 468         }
 469
 470         empathy_avatar_unref (priv->avatar);
 471         priv->avatar = NULL;
 472
 473         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 474         gtk_button_set_image (GTK_BUTTON (chooser), image);
 475         g_signal_emit (chooser, signals[CHANGED], 0);
 476 }
 477
 478 static void
 479 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 480                           gchar                *data,
 481                           gsize                 size,
 482                           gboolean              set_locally)
 483 {
 484         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 485
 486         GdkPixbuf     *pixbuf, *pixbuf_view;
 487         GtkWidget     *image;
 488         EmpathyAvatar *avatar = NULL;
 489         gchar         *mime_type = NULL;
 490
 491         if (data == NULL) {
 492                 avatar_chooser_clear_image (chooser);
 493                 g_free (data);
 494                 return;
 495         }
 496
 497         pixbuf = empathy_pixbuf_from_data (data, size, &mime_type);
 498         if (pixbuf == NULL) {
 499                 g_free (data);
 500                 return;
 501         }
 502
 503         /* avatar takes ownership of data and mime_type */
 504         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 505
 506         if (set_locally) {
 507                 EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
 508                         chooser, pixbuf, avatar);
 509                 empathy_avatar_unref (avatar);
 510                 avatar = conv;
 511         }
 512
 513         if (avatar == NULL) {
 514                 /* An error occured; don't change the avatar. */
 515                 return;
 516         }
 517
 518         if (priv->avatar != NULL) {
 519                 empathy_avatar_unref (priv->avatar);
 520         }
 521         priv->avatar = avatar;
 522
 523         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 524         image = gtk_image_new_from_pixbuf (pixbuf_view);
 525
 526         gtk_button_set_image (GTK_BUTTON (chooser), image);
 527         g_signal_emit (chooser, signals[CHANGED], 0);
 528
 529         g_object_unref (pixbuf_view);
 530         g_object_unref (pixbuf);
 531 }
 532
 533 static void
 534 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 535                                     const gchar          *filename)
 536 {
 537         gchar  *image_data = NULL;
 538         gsize   image_size = 0;
 539         GError *error = NULL;
 540
 541         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 542                 DEBUG ("Failed to load image from '%s': %s", filename,
 543                         error ? error->message : "No error given");
 544
 545                 g_clear_error (&error);
 546                 return;
 547         }
 548
 549         avatar_chooser_set_image (chooser, image_data, image_size, TRUE);
 550 }
 551
 552 static gboolean
 553 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 554                               GdkDragContext     *context,
 555                               gint                x,
 556                               gint                y,
 557                               guint               time,
 558                               EmpathyAvatarChooser *chooser)
 559 {
 560         EmpathyAvatarChooserPriv *priv;
 561         GList                  *p;
 562
 563         priv = GET_PRIV (chooser);
 564
 565         for (p = context->targets; p != NULL; p = p->next) {
 566                 gchar *possible_type;
 567
 568                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 569
 570                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 571                         g_free (possible_type);
 572                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 573
 574                         return TRUE;
 575                 }
 576
 577                 g_free (possible_type);
 578         }
 579
 580         return FALSE;
 581 }
 582
 583 static void
 584 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 585                              GdkDragContext     *context,
 586                              guint               time,
 587                              EmpathyAvatarChooser *chooser)
 588 {
 589 }
 590
 591 static gboolean
 592 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 593                             GdkDragContext     *context,
 594                             gint                x,
 595                             gint                y,
 596                             guint               time,
 597                             EmpathyAvatarChooser *chooser)
 598 {
 599         EmpathyAvatarChooserPriv *priv;
 600         GList                  *p;
 601
 602         priv = GET_PRIV (chooser);
 603
 604         if (context->targets == NULL) {
 605                 return FALSE;
 606         }
 607
 608         for (p = context->targets; p != NULL; p = p->next) {
 609                 char *possible_type;
 610
 611                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 612                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 613                         g_free (possible_type);
 614                         gtk_drag_get_data (widget, context,
 615                                            GDK_POINTER_TO_ATOM (p->data),
 616                                            time);
 617
 618                         return TRUE;
 619                 }
 620
 621                 g_free (possible_type);
 622         }
 623
 624         return FALSE;
 625 }
 626
 627 static void
 628 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 629                                      GdkDragContext     *context,
 630                                      gint                x,
 631                                      gint                y,
 632                                      GtkSelectionData   *selection_data,
 633                                      guint               info,
 634                                      guint               time,
 635                                      EmpathyAvatarChooser *chooser)
 636 {
 637         gchar    *target_type;
 638         gboolean  handled = FALSE;
 639
 640         target_type = gdk_atom_name (selection_data->target);
 641         if (!strcmp (target_type, URI_LIST_TYPE)) {
 642                 GFile            *file;
 643                 GFileInputStream *input_stream;
 644                 gchar            *nl;
 645                 gchar            *data = NULL;
 646
 647                 nl = strstr (selection_data->data, "\r\n");
 648                 if (nl) {
 649                         gchar *uri;
 650
 651                         uri = g_strndup (selection_data->data,
 652                                          nl - (gchar*) selection_data->data);
 653
 654                         file = g_file_new_for_uri (uri);
 655                         g_free (uri);
 656                 } else {
 657                         file = g_file_new_for_uri (selection_data->data);
 658                 }
 659
 660                 input_stream = g_file_read (file, NULL, NULL);
 661
 662                 if (input_stream != NULL) {
 663                         GFileInfo *info;
 664
 665                         info = g_file_query_info (file,
 666                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 667                                                   0, NULL, NULL);
 668                         if (info != NULL) {
 669                                 goffset size;
 670                                 gssize bytes_read;
 671
 672                                 size = g_file_info_get_size (info);
 673                                 data = g_malloc (size);
 674
 675                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 676                                                                   data, size,
 677                                                                   NULL, NULL);
 678                                 if (bytes_read != -1) {
 679                                         avatar_chooser_set_image (chooser,
 680                                                                   data,
 681                                                                   (gsize) bytes_read,
 682                                                                   TRUE);
 683                                         handled = TRUE;
 684                                 }
 685
 686                                 g_free (data);
 687                                 g_object_unref (info);
 688                         }
 689
 690                         g_object_unref (input_stream);
 691                 }
 692
 693                 g_object_unref (file);
 694         }
 695
 696         gtk_drag_finish (context, handled, FALSE, time);
 697 }
 698
 699 static void
 700 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 701                                   EmpathyAvatarChooser *chooser)
 702 {
 703         gchar *filename;
 704
 705         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 706
 707         if (filename) {
 708                 GtkWidget *image;
 709                 GdkPixbuf *pixbuf = NULL;
 710                 GdkPixbuf *scaled_pixbuf;
 711
 712                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 713
 714                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 715
 716                 if (pixbuf) {
 717                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 718                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 719                         g_object_unref (scaled_pixbuf);
 720                         g_object_unref (pixbuf);
 721                 } else {
 722                         gtk_image_set_from_stock (GTK_IMAGE (image),
 723                                                   "gtk-dialog-question",
 724                                                   GTK_ICON_SIZE_DIALOG);
 725                 }
 726         }
 727
 728         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 729 }
 730
 731 static void
 732 avatar_chooser_response_cb (GtkWidget            *widget,
 733                             gint                  response,
 734                             EmpathyAvatarChooser *chooser)
 735 {
 736         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 737
 738         if (response == GTK_RESPONSE_CANCEL) {
 739                 goto out;
 740         }
 741
 742         /* Check if we went non-ready since displaying the dialog. */
 743         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 744                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 745                 goto out;
 746         }
 747
 748         if (response == GTK_RESPONSE_OK) {
 749                 gchar *filename;
 750                 gchar *path;
 751
 752                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 753                 avatar_chooser_set_image_from_file (chooser, filename);
 754                 g_free (filename);
 755
 756                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 757                 if (path) {
 758                         empathy_conf_set_string (empathy_conf_get (),
 759                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 760                                                  path);
 761                         g_free (path);
 762                 }
 763         }
 764         else if (response == GTK_RESPONSE_NO) {
 765                 /* This corresponds to "No Image", not to "Cancel" */
 766                 avatar_chooser_clear_image (chooser);
 767         }
 768
 769 out:
 770         gtk_widget_destroy (widget);
 771 }
 772
 773 static void
 774 avatar_chooser_clicked_cb (GtkWidget            *button,
 775                            EmpathyAvatarChooser *chooser)
 776 {
 777         GtkFileChooser *chooser_dialog;
 778         GtkWidget      *image;
 779         gchar          *saved_dir = NULL;
 780         const gchar    *default_dir = DEFAULT_DIR;
 781         const gchar    *pics_dir;
 782         GtkFileFilter  *filter;
 783
 784         chooser_dialog = GTK_FILE_CHOOSER (
 785                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 786                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 787                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 788                                              _("No Image"),
 789                                              GTK_RESPONSE_NO,
 790                                              GTK_STOCK_CANCEL,
 791                                              GTK_RESPONSE_CANCEL,
 792                                              GTK_STOCK_OPEN,
 793                                              GTK_RESPONSE_OK,
 794                                              NULL));
 795
 796         /* Get special dirs */
 797         empathy_conf_get_string (empathy_conf_get (),
 798                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 799                                  &saved_dir);
 800         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 801                 g_free (saved_dir);
 802                 saved_dir = NULL;
 803         }
 804         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 805                 default_dir = NULL;
 806         }
 807         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 808         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 809                 pics_dir = NULL;
 810         }
 811
 812         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 813         if (saved_dir) {
 814                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 815         }
 816         else if (pics_dir) {
 817                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 818         }
 819         else if (default_dir) {
 820                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 821         } else {
 822                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 823         }
 824
 825         /* Add shortcuts to special dirs */
 826         if (saved_dir) {
 827                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 828         }
 829         else if (pics_dir) {
 830                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 831         }
 832         if (default_dir) {
 833                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 834         }
 835
 836         /* Setup preview image */
 837         image = gtk_image_new ();
 838         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 839         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 840         gtk_widget_show (image);
 841         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 842         g_signal_connect (chooser_dialog, "update-preview",
 843                           G_CALLBACK (avatar_chooser_update_preview_cb),
 844                           chooser);
 845
 846         /* Setup filers */
 847         filter = gtk_file_filter_new ();
 848         gtk_file_filter_set_name (filter, _("Images"));
 849         gtk_file_filter_add_pixbuf_formats (filter);
 850         gtk_file_chooser_add_filter (chooser_dialog, filter);
 851         filter = gtk_file_filter_new ();
 852         gtk_file_filter_set_name (filter, _("All Files"));
 853         gtk_file_filter_add_pattern(filter, "*");
 854         gtk_file_chooser_add_filter (chooser_dialog, filter);
 855
 856         /* Setup response */
 857         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 858         g_signal_connect (chooser_dialog, "response",
 859                           G_CALLBACK (avatar_chooser_response_cb),
 860                           chooser);
 861
 862         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 863         g_free (saved_dir);
 864 }
 865
 866 GtkWidget *
 867 empathy_avatar_chooser_new ()
 868 {
 869         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 870 }
 871
 872 /* FIXME: when the avatar passed to this function actually can be relied upon to
 873  * contain a mime type, we can probably just ref it and store it.
 874  */
 875 void
 876 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 877                             EmpathyAvatar        *avatar)
 878 {
 879         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 880
 881         if (avatar != NULL) {
 882                 gchar *data = g_memdup (avatar->data, avatar->len);
 883                 avatar_chooser_set_image (chooser, data, avatar->len, FALSE);
 884         } else {
 885                 avatar_chooser_clear_image (chooser);
 886         }
 887 }
 888
 889 void
 890 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 891                                        const gchar          **data,
 892                                        gsize                 *data_size,
 893                                        const gchar          **mime_type)
 894 {
 895         EmpathyAvatarChooserPriv *priv;
 896
 897         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 898
 899         priv = GET_PRIV (chooser);
 900
 901         if (priv->avatar != NULL) {
 902                 if (data != NULL) {
 903                         *data = priv->avatar->data;
 904                 }
 905                 if (data_size != NULL) {
 906                         *data_size = priv->avatar->len;
 907                 }
 908                 if (mime_type != NULL) {
 909                         *mime_type = priv->avatar->format;
 910                 }
 911         } else {
 912                 if (data != NULL) {
 913                         *data = NULL;
 914                 }
 915                 if (data_size != NULL) {
 916                         *data_size = 0;
 917                 }
 918                 if (mime_type != NULL) {
 919                         *mime_type = NULL;
 920                 }
 921         }
 922 }
 923