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