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                                                         EmpathyAvatar        *avatar,
  60                                                         GdkPixbuf            *pixbuf,
  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);
 228         g_assert (priv->tp_contact_factory == NULL);
 229
 230         g_object_unref (priv->contact_factory);
 231
 232         if (priv->avatar != NULL) {
 233                 empathy_avatar_unref (priv->avatar);
 234         }
 235
 236         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 237 }
 238
 239 static void
 240 avatar_chooser_tp_cf_ready_cb (EmpathyTpContactFactory *tp_cf,
 241                                GParamSpec              *unused,
 242                                EmpathyAvatarChooser    *self)
 243 {
 244         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 245         gboolean ready;
 246
 247         /* sanity check that we're listening on the right ETpCF */
 248         g_assert (priv->tp_contact_factory == tp_cf);
 249
 250         ready = empathy_tp_contact_factory_is_ready (tp_cf);
 251         gtk_widget_set_sensitive (GTK_WIDGET (self), ready);
 252 }
 253
 254 static void
 255 avatar_chooser_set_account (EmpathyAvatarChooser *self,
 256                             McAccount            *account)
 257 {
 258         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 259
 260         if (priv->account != NULL) {
 261                 g_object_unref (priv->account);
 262                 priv->account = NULL;
 263
 264                 g_assert (priv->tp_contact_factory != NULL);
 265
 266                 g_signal_handler_disconnect (priv->tp_contact_factory,
 267                         priv->ready_handler_id);
 268                 priv->ready_handler_id = 0;
 269
 270                 g_object_unref (priv->tp_contact_factory);
 271                 priv->tp_contact_factory = NULL;
 272         }
 273
 274         if (account != NULL) {
 275                 priv->account = g_object_ref (account);
 276                 priv->tp_contact_factory = g_object_ref (
 277                         empathy_contact_factory_get_tp_factory (
 278                                 priv->contact_factory, priv->account));
 279
 280                 priv->ready_handler_id = g_signal_connect (
 281                         priv->tp_contact_factory, "notify::ready",
 282                         G_CALLBACK (avatar_chooser_tp_cf_ready_cb), self);
 283                 avatar_chooser_tp_cf_ready_cb (priv->tp_contact_factory, NULL,
 284                         self);
 285         }
 286 }
 287
 288 static gboolean
 289 str_in_strv (gchar  *str,
 290              gchar **strv)
 291 {
 292         if (strv == NULL) {
 293                 return FALSE;
 294         }
 295
 296         while (*strv != NULL) {
 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         gchar   *name = NULL,
 314                 *type = NULL;
 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         /* Special-case png and jpeg to avoid accidentally saving to something
 325          * uncompressed like bmp. This assumes that we can write image/png and
 326          * image/jpeg; if this isn't true then something's really wrong with
 327          * GdkPixbuf.
 328          */
 329         if (str_in_strv ("image/png", accepted_mime_types)) {
 330                 name = g_strdup ("png");
 331                 type = g_strdup ("image/png");
 332                 done = TRUE;
 333         } else if (str_in_strv ("image/jpeg", accepted_mime_types)) {
 334                 name = g_strdup ("jpeg");
 335                 type = g_strdup ("image/jpeg");
 336                 done = TRUE;
 337         } else {
 338                 GSList  *formats = gdk_pixbuf_get_formats ();
 339                 GSList  *l;
 340                 gchar  **strv;
 341
 342                 for (l = formats; !done && l != NULL; l = l->next) {
 343                         GdkPixbufFormat *format = l->data;
 344                         gchar **format_mime_types;
 345
 346                         if (!gdk_pixbuf_format_is_writable (format)) {
 347                                 continue;
 348                         }
 349
 350                         format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 351                         for (strv = format_mime_types; *strv != NULL; strv++) {
 352                                 if (str_in_strv (*strv, accepted_mime_types)) {
 353                                         name = gdk_pixbuf_format_get_name (format);
 354                                         type = g_strdup (*strv);
 355                                         done = TRUE;
 356                                         break;
 357                                 }
 358                         }
 359                         g_strfreev (format_mime_types);
 360                 }
 361
 362                 g_slist_free (formats);
 363         }
 364
 365         if (done) {
 366                 *satisfactory_format_name = name;
 367                 *satisfactory_mime_type = type;
 368                 return TRUE;
 369         } else {
 370                 /* check we're not leaking. */
 371                 g_assert (name == NULL);
 372                 g_assert (type == NULL);
 373                 return FALSE;
 374         }
 375 }
 376
 377 static EmpathyAvatar *
 378 avatar_chooser_convert (EmpathyAvatarChooser *chooser,
 379                         GdkPixbuf            *pixbuf_scaled,
 380                         gchar               **mime_types,
 381                         gsize                 max_size)
 382 {
 383         gchar         *format_name = NULL, *new_mime_type = NULL;
 384         gchar         *converted_image_data = NULL;
 385         gsize          converted_image_size = 0;
 386         EmpathyAvatar *converted_avatar = NULL;
 387         gboolean       saved;
 388         GError        *error = NULL;
 389
 390         if (!can_satisfy_mime_type_requirements (mime_types, &format_name,
 391                                                  &new_mime_type)) {
 392                 DEBUG ("Mon dieu! Can't convert to any acceptable format!");
 393                 return NULL;
 394         }
 395
 396         saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled, &converted_image_data,
 397                 &converted_image_size, format_name, &error, NULL);
 398         g_free (format_name);
 399
 400         if (!saved) {
 401                 DEBUG ("Couldn't convert image: %s", error->message);
 402                 g_error_free (error);
 403
 404                 g_free (new_mime_type);
 405                 return NULL;
 406         }
 407
 408         /* Takes ownership of new_mime_type */
 409         converted_avatar = empathy_avatar_new (converted_image_data,
 410                 converted_image_size, new_mime_type, NULL);
 411
 412         if (max_size > 0 && converted_avatar->len > max_size) {
 413                 /* FIXME: We could try converting to a different format; in
 414                  *        particular, try converting to jpeg with increasingly
 415                  *        high compression (if jpeg is supported). Not sure how
 416                  *        much we care.
 417                  */
 418                 DEBUG ("Converted the image, but the new filesize is too big");
 419
 420                 empathy_avatar_unref (converted_avatar);
 421                 converted_avatar = NULL;
 422         }
 423
 424         return converted_avatar;
 425 }
 426
 427 static EmpathyAvatar *
 428 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 429                                         GdkPixbuf            *pixbuf,
 430                                         EmpathyAvatar        *avatar)
 431 {
 432         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 433         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 434         gint                      max_width = 0, max_height = 0, max_size = 0;
 435         gchar                   **mime_types = NULL;
 436         gboolean                  needs_conversion = FALSE;
 437         GdkPixbuf                *pixbuf_scaled = NULL;
 438
 439         /* This should only be called if the user is setting a new avatar,
 440          * which should only be allowed once the avatar requirements have been
 441          * discovered.
 442          */
 443         g_return_val_if_fail (tp_cf != NULL, NULL);
 444         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 445                 NULL);
 446
 447         g_object_get (tp_cf,
 448                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 449                 "avatar-max-width", &max_width,
 450                 "avatar-max-height", &max_height,
 451                 "avatar-max-size", &max_size,
 452                 NULL);
 453
 454         /* If the avatar's not already the right type, it needs converting. */
 455         if (!str_in_strv (avatar->format, mime_types)) {
 456                 needs_conversion = TRUE;
 457         }
 458
 459         /* If _scale_down_if_necessary yields a new pixbuf, then it needed
 460          * scaling.  If it's the same pixbuf, it did not, and did no extra work
 461          * beyond checking the dimensions.  Hence, we call it even if
 462          * needs_conversion is already TRUE, rather than duplicating the
 463          * dimension checking code here, as it's no more expensive than
 464          * checking the dimensions first in the case where no scaling is
 465          * necessary.
 466          */
 467         pixbuf_scaled = empathy_pixbuf_scale_down_if_necessary (pixbuf,
 468                 MIN(max_width, max_height));
 469         if (pixbuf_scaled != pixbuf) {
 470                 needs_conversion = TRUE;
 471         }
 472
 473         if (max_size > 0 && avatar->len > max_size) {
 474                 needs_conversion = TRUE;
 475         }
 476
 477         if (needs_conversion) {
 478                 avatar = avatar_chooser_convert (chooser, pixbuf_scaled,
 479                         mime_types, max_size);
 480         } else {
 481                 /* Just return another reference to the avatar passed in. */
 482                 avatar = empathy_avatar_ref (avatar);
 483         }
 484
 485         g_object_unref (pixbuf_scaled);
 486         g_strfreev (mime_types);
 487         return avatar;
 488 }
 489
 490 static void
 491 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 492 {
 493         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 494         GtkWidget *image;
 495
 496         if (priv->avatar == NULL) {
 497                 return;
 498         }
 499
 500         empathy_avatar_unref (priv->avatar);
 501         priv->avatar = NULL;
 502
 503         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 504         gtk_button_set_image (GTK_BUTTON (chooser), image);
 505         g_signal_emit (chooser, signals[CHANGED], 0);
 506 }
 507
 508 static void
 509 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 510                                     gchar                *data,
 511                                     gsize                 size,
 512                                     gboolean              set_locally)
 513 {
 514         GdkPixbuf     *pixbuf;
 515         EmpathyAvatar *avatar = NULL;
 516         gchar         *mime_type = NULL;
 517
 518         if (data == NULL) {
 519                 avatar_chooser_clear_image (chooser);
 520                 g_free (data);
 521                 return;
 522         }
 523
 524         pixbuf = empathy_pixbuf_from_data (data, size, &mime_type);
 525         if (pixbuf == NULL) {
 526                 g_free (data);
 527                 return;
 528         }
 529
 530         /* avatar takes ownership of data and mime_type */
 531         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 532
 533         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 534 }
 535
 536 static void
 537 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 538                                       EmpathyAvatar        *avatar,
 539                                       gboolean              set_locally)
 540 {
 541         GdkPixbuf *pixbuf;
 542         gchar     *mime_type = NULL;
 543
 544         g_assert (avatar != NULL);
 545
 546         pixbuf = empathy_pixbuf_from_data (avatar->data, avatar->len, &mime_type);
 547         if (pixbuf == NULL) {
 548                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 549                 return;
 550         }
 551
 552         if (avatar->format == NULL) {
 553                 avatar->format = mime_type;
 554         } else {
 555                 if (strcmp (mime_type, avatar->format)) {
 556                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 557                                 avatar->format, mime_type);
 558                 }
 559                 g_free (mime_type);
 560         }
 561
 562         empathy_avatar_ref (avatar);
 563
 564         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 565 }
 566
 567 static void
 568 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 569                           EmpathyAvatar        *avatar,
 570                           GdkPixbuf            *pixbuf,
 571                           gboolean              set_locally)
 572 {
 573         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 574         GdkPixbuf                *pixbuf_view;
 575         GtkWidget                *image;
 576
 577         g_assert (avatar != NULL);
 578         g_assert (pixbuf != NULL);
 579
 580         if (set_locally) {
 581                 EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
 582                         chooser, pixbuf, avatar);
 583                 empathy_avatar_unref (avatar);
 584
 585                 if (conv == NULL) {
 586                         /* An error occured; don't change the avatar. */
 587                         return;
 588                 }
 589
 590                 avatar = conv;
 591         }
 592
 593         if (priv->avatar != NULL) {
 594                 empathy_avatar_unref (priv->avatar);
 595         }
 596         priv->avatar = avatar;
 597
 598         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 599         image = gtk_image_new_from_pixbuf (pixbuf_view);
 600
 601         gtk_button_set_image (GTK_BUTTON (chooser), image);
 602         g_signal_emit (chooser, signals[CHANGED], 0);
 603
 604         g_object_unref (pixbuf_view);
 605         g_object_unref (pixbuf);
 606 }
 607
 608 static void
 609 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 610                                     const gchar          *filename)
 611 {
 612         gchar  *image_data = NULL;
 613         gsize   image_size = 0;
 614         GError *error = NULL;
 615
 616         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 617                 DEBUG ("Failed to load image from '%s': %s", filename,
 618                         error ? error->message : "No error given");
 619
 620                 g_clear_error (&error);
 621                 return;
 622         }
 623
 624         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 625 }
 626
 627 static gboolean
 628 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 629                               GdkDragContext     *context,
 630                               gint                x,
 631                               gint                y,
 632                               guint               time,
 633                               EmpathyAvatarChooser *chooser)
 634 {
 635         EmpathyAvatarChooserPriv *priv;
 636         GList                  *p;
 637
 638         priv = GET_PRIV (chooser);
 639
 640         for (p = context->targets; p != NULL; p = p->next) {
 641                 gchar *possible_type;
 642
 643                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 644
 645                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 646                         g_free (possible_type);
 647                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 648
 649                         return TRUE;
 650                 }
 651
 652                 g_free (possible_type);
 653         }
 654
 655         return FALSE;
 656 }
 657
 658 static void
 659 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 660                              GdkDragContext     *context,
 661                              guint               time,
 662                              EmpathyAvatarChooser *chooser)
 663 {
 664 }
 665
 666 static gboolean
 667 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 668                             GdkDragContext     *context,
 669                             gint                x,
 670                             gint                y,
 671                             guint               time,
 672                             EmpathyAvatarChooser *chooser)
 673 {
 674         EmpathyAvatarChooserPriv *priv;
 675         GList                  *p;
 676
 677         priv = GET_PRIV (chooser);
 678
 679         if (context->targets == NULL) {
 680                 return FALSE;
 681         }
 682
 683         for (p = context->targets; p != NULL; p = p->next) {
 684                 char *possible_type;
 685
 686                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 687                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 688                         g_free (possible_type);
 689                         gtk_drag_get_data (widget, context,
 690                                            GDK_POINTER_TO_ATOM (p->data),
 691                                            time);
 692
 693                         return TRUE;
 694                 }
 695
 696                 g_free (possible_type);
 697         }
 698
 699         return FALSE;
 700 }
 701
 702 static void
 703 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 704                                      GdkDragContext     *context,
 705                                      gint                x,
 706                                      gint                y,
 707                                      GtkSelectionData   *selection_data,
 708                                      guint               info,
 709                                      guint               time,
 710                                      EmpathyAvatarChooser *chooser)
 711 {
 712         gchar    *target_type;
 713         gboolean  handled = FALSE;
 714
 715         target_type = gdk_atom_name (selection_data->target);
 716         if (!strcmp (target_type, URI_LIST_TYPE)) {
 717                 GFile            *file;
 718                 GFileInputStream *input_stream;
 719                 gchar            *nl;
 720                 gchar            *data = NULL;
 721
 722                 nl = strstr (selection_data->data, "\r\n");
 723                 if (nl) {
 724                         gchar *uri;
 725
 726                         uri = g_strndup (selection_data->data,
 727                                          nl - (gchar*) selection_data->data);
 728
 729                         file = g_file_new_for_uri (uri);
 730                         g_free (uri);
 731                 } else {
 732                         file = g_file_new_for_uri (selection_data->data);
 733                 }
 734
 735                 input_stream = g_file_read (file, NULL, NULL);
 736
 737                 if (input_stream != NULL) {
 738                         GFileInfo *info;
 739
 740                         info = g_file_query_info (file,
 741                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 742                                                   0, NULL, NULL);
 743                         if (info != NULL) {
 744                                 goffset size;
 745                                 gssize bytes_read;
 746
 747                                 size = g_file_info_get_size (info);
 748                                 data = g_malloc (size);
 749
 750                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 751                                                                   data, size,
 752                                                                   NULL, NULL);
 753                                 if (bytes_read != -1) {
 754                                         avatar_chooser_set_image_from_data (
 755                                                 chooser, data,
 756                                                 (gsize) bytes_read,
 757                                                 TRUE);
 758                                         handled = TRUE;
 759                                 }
 760
 761                                 g_free (data);
 762                                 g_object_unref (info);
 763                         }
 764
 765                         g_object_unref (input_stream);
 766                 }
 767
 768                 g_object_unref (file);
 769         }
 770
 771         gtk_drag_finish (context, handled, FALSE, time);
 772 }
 773
 774 static void
 775 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 776                                   EmpathyAvatarChooser *chooser)
 777 {
 778         gchar *filename;
 779
 780         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 781
 782         if (filename) {
 783                 GtkWidget *image;
 784                 GdkPixbuf *pixbuf = NULL;
 785                 GdkPixbuf *scaled_pixbuf;
 786
 787                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 788
 789                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 790
 791                 if (pixbuf) {
 792                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 793                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 794                         g_object_unref (scaled_pixbuf);
 795                         g_object_unref (pixbuf);
 796                 } else {
 797                         gtk_image_set_from_stock (GTK_IMAGE (image),
 798                                                   "gtk-dialog-question",
 799                                                   GTK_ICON_SIZE_DIALOG);
 800                 }
 801         }
 802
 803         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 804 }
 805
 806 static void
 807 avatar_chooser_response_cb (GtkWidget            *widget,
 808                             gint                  response,
 809                             EmpathyAvatarChooser *chooser)
 810 {
 811         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 812
 813         if (response == GTK_RESPONSE_CANCEL) {
 814                 goto out;
 815         }
 816
 817         /* Check if we went non-ready since displaying the dialog. */
 818         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 819                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 820                 goto out;
 821         }
 822
 823         if (response == GTK_RESPONSE_OK) {
 824                 gchar *filename;
 825                 gchar *path;
 826
 827                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 828                 avatar_chooser_set_image_from_file (chooser, filename);
 829                 g_free (filename);
 830
 831                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 832                 if (path) {
 833                         empathy_conf_set_string (empathy_conf_get (),
 834                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 835                                                  path);
 836                         g_free (path);
 837                 }
 838         }
 839         else if (response == GTK_RESPONSE_NO) {
 840                 /* This corresponds to "No Image", not to "Cancel" */
 841                 avatar_chooser_clear_image (chooser);
 842         }
 843
 844 out:
 845         gtk_widget_destroy (widget);
 846 }
 847
 848 static void
 849 avatar_chooser_clicked_cb (GtkWidget            *button,
 850                            EmpathyAvatarChooser *chooser)
 851 {
 852         GtkFileChooser *chooser_dialog;
 853         GtkWidget      *image;
 854         gchar          *saved_dir = NULL;
 855         const gchar    *default_dir = DEFAULT_DIR;
 856         const gchar    *pics_dir;
 857         GtkFileFilter  *filter;
 858
 859         chooser_dialog = GTK_FILE_CHOOSER (
 860                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 861                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 862                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 863                                              _("No Image"),
 864                                              GTK_RESPONSE_NO,
 865                                              GTK_STOCK_CANCEL,
 866                                              GTK_RESPONSE_CANCEL,
 867                                              GTK_STOCK_OPEN,
 868                                              GTK_RESPONSE_OK,
 869                                              NULL));
 870
 871         /* Get special dirs */
 872         empathy_conf_get_string (empathy_conf_get (),
 873                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 874                                  &saved_dir);
 875         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 876                 g_free (saved_dir);
 877                 saved_dir = NULL;
 878         }
 879         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 880                 default_dir = NULL;
 881         }
 882         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 883         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 884                 pics_dir = NULL;
 885         }
 886
 887         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 888         if (saved_dir) {
 889                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 890         }
 891         else if (pics_dir) {
 892                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 893         }
 894         else if (default_dir) {
 895                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 896         } else {
 897                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 898         }
 899
 900         /* Add shortcuts to special dirs */
 901         if (saved_dir) {
 902                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 903         }
 904         else if (pics_dir) {
 905                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 906         }
 907         if (default_dir) {
 908                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 909         }
 910
 911         /* Setup preview image */
 912         image = gtk_image_new ();
 913         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 914         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 915         gtk_widget_show (image);
 916         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 917         g_signal_connect (chooser_dialog, "update-preview",
 918                           G_CALLBACK (avatar_chooser_update_preview_cb),
 919                           chooser);
 920
 921         /* Setup filers */
 922         filter = gtk_file_filter_new ();
 923         gtk_file_filter_set_name (filter, _("Images"));
 924         gtk_file_filter_add_pixbuf_formats (filter);
 925         gtk_file_chooser_add_filter (chooser_dialog, filter);
 926         filter = gtk_file_filter_new ();
 927         gtk_file_filter_set_name (filter, _("All Files"));
 928         gtk_file_filter_add_pattern(filter, "*");
 929         gtk_file_chooser_add_filter (chooser_dialog, filter);
 930
 931         /* Setup response */
 932         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 933         g_signal_connect (chooser_dialog, "response",
 934                           G_CALLBACK (avatar_chooser_response_cb),
 935                           chooser);
 936
 937         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 938         g_free (saved_dir);
 939 }
 940
 941 GtkWidget *
 942 empathy_avatar_chooser_new ()
 943 {
 944         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 945 }
 946
 947 void
 948 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 949                             EmpathyAvatar        *avatar)
 950 {
 951         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 952
 953         if (avatar != NULL) {
 954                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
 955         } else {
 956                 avatar_chooser_clear_image (chooser);
 957         }
 958 }
 959
 960 void
 961 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 962                                        const gchar          **data,
 963                                        gsize                 *data_size,
 964                                        const gchar          **mime_type)
 965 {
 966         EmpathyAvatarChooserPriv *priv;
 967
 968         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 969
 970         priv = GET_PRIV (chooser);
 971
 972         if (priv->avatar != NULL) {
 973                 if (data != NULL) {
 974                         *data = priv->avatar->data;
 975                 }
 976                 if (data_size != NULL) {
 977                         *data_size = priv->avatar->len;
 978                 }
 979                 if (mime_type != NULL) {
 980                         *mime_type = priv->avatar->format;
 981                 }
 982         } else {
 983                 if (data != NULL) {
 984                         *data = NULL;
 985                 }
 986                 if (data_size != NULL) {
 987                         *data_size = 0;
 988                 }
 989                 if (mime_type != NULL) {
 990                         *mime_type = NULL;
 991                 }
 992         }
 993 }
 994