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 image data "
 419                        "(%"G_GSIZE_FORMAT" bytes) is too big "
 420                        "(max is %"G_GSIZE_FORMAT" bytes)",
 421                        converted_avatar->len , max_size);
 422
 423                 empathy_avatar_unref (converted_avatar);
 424                 converted_avatar = NULL;
 425         }
 426
 427         return converted_avatar;
 428 }
 429
 430 static EmpathyAvatar *
 431 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 432                                         GdkPixbuf            *pixbuf,
 433                                         EmpathyAvatar        *avatar)
 434 {
 435         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 436         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 437         gint                      max_width = 0, max_height = 0, max_size = 0;
 438         gchar                   **mime_types = NULL;
 439         gboolean                  needs_conversion = FALSE;
 440         GdkPixbuf                *pixbuf_scaled = NULL;
 441         gint                      width, height;
 442
 443         /* This should only be called if the user is setting a new avatar,
 444          * which should only be allowed once the avatar requirements have been
 445          * discovered.
 446          */
 447         g_return_val_if_fail (tp_cf != NULL, NULL);
 448         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 449                 NULL);
 450
 451         g_object_get (tp_cf,
 452                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 453                 "avatar-max-width", &max_width,
 454                 "avatar-max-height", &max_height,
 455                 "avatar-max-size", &max_size,
 456                 NULL);
 457
 458         /* If the avatar's not already the right type, it needs converting. */
 459         if (!str_in_strv (avatar->format, mime_types)) {
 460                 DEBUG ("Image format %s not supported by the protocol, "
 461                        "conversion needed.", avatar->format);
 462                 needs_conversion = TRUE;
 463         }
 464
 465         /* If the data len is too big, it needs converting. */
 466         if (max_size > 0 && avatar->len > max_size) {
 467                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 468                        "(max is %"G_GSIZE_FORMAT" bytes), conversion needed.",
 469                        avatar->len, max_size);
 470
 471                 needs_conversion = TRUE;
 472         }
 473
 474         /* If width or height are too big, it needs converting. */
 475         width = gdk_pixbuf_get_width (pixbuf);
 476         height = gdk_pixbuf_get_height (pixbuf);
 477         if ((max_width > 0 && width > max_width) ||
 478             (max_height > 0 && height > max_height)) {
 479                 gdouble h_factor, v_factor;
 480
 481                 h_factor = (gdouble) max_width / width;
 482                 v_factor = (gdouble) max_height / height;
 483                 width = width * MIN (h_factor, v_factor);
 484                 height = height * MIN (h_factor, v_factor);
 485
 486                 DEBUG ("Image dimensions are too big. Max is %dx%d,"
 487                        "scaling down to %dx%d",
 488                        max_width, max_height, width, height);
 489                 pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 490                                                          width, height,
 491                                                          GDK_INTERP_HYPER);
 492                 needs_conversion = TRUE;
 493         } else {
 494                 pixbuf_scaled = g_object_ref (pixbuf);
 495         }
 496
 497         if (needs_conversion) {
 498                 avatar = avatar_chooser_convert (chooser, pixbuf_scaled,
 499                         mime_types, max_size);
 500         } else {
 501                 /* Just return another reference to the avatar passed in. */
 502                 avatar = empathy_avatar_ref (avatar);
 503         }
 504
 505         g_object_unref (pixbuf_scaled);
 506         g_strfreev (mime_types);
 507         return avatar;
 508 }
 509
 510 static void
 511 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 512 {
 513         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 514         GtkWidget *image;
 515
 516         if (priv->avatar == NULL) {
 517                 return;
 518         }
 519
 520         empathy_avatar_unref (priv->avatar);
 521         priv->avatar = NULL;
 522
 523         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 524         gtk_button_set_image (GTK_BUTTON (chooser), image);
 525         g_signal_emit (chooser, signals[CHANGED], 0);
 526 }
 527
 528 static void
 529 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 530                                     gchar                *data,
 531                                     gsize                 size,
 532                                     gboolean              set_locally)
 533 {
 534         GdkPixbuf     *pixbuf;
 535         EmpathyAvatar *avatar = NULL;
 536         gchar         *mime_type = NULL;
 537
 538         if (data == NULL) {
 539                 avatar_chooser_clear_image (chooser);
 540                 g_free (data);
 541                 return;
 542         }
 543
 544         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 545         if (pixbuf == NULL) {
 546                 g_free (data);
 547                 return;
 548         }
 549
 550         /* avatar takes ownership of data and mime_type */
 551         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 552
 553         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 554 }
 555
 556 static void
 557 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 558                                       EmpathyAvatar        *avatar,
 559                                       gboolean              set_locally)
 560 {
 561         GdkPixbuf *pixbuf;
 562         gchar     *mime_type = NULL;
 563
 564         g_assert (avatar != NULL);
 565
 566         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 567                                                     avatar->len,
 568                                                     &mime_type);
 569         if (pixbuf == NULL) {
 570                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 571                 return;
 572         }
 573
 574         if (avatar->format == NULL) {
 575                 avatar->format = mime_type;
 576         } else {
 577                 if (strcmp (mime_type, avatar->format)) {
 578                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 579                                 avatar->format, mime_type);
 580                 }
 581                 g_free (mime_type);
 582         }
 583
 584         empathy_avatar_ref (avatar);
 585
 586         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 587 }
 588
 589 static void
 590 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 591                           EmpathyAvatar        *avatar,
 592                           GdkPixbuf            *pixbuf,
 593                           gboolean              set_locally)
 594 {
 595         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 596         GdkPixbuf                *pixbuf_view;
 597         GtkWidget                *image;
 598
 599         g_assert (avatar != NULL);
 600         g_assert (pixbuf != NULL);
 601
 602         if (set_locally) {
 603                 EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
 604                         chooser, pixbuf, avatar);
 605                 empathy_avatar_unref (avatar);
 606
 607                 if (conv == NULL) {
 608                         /* An error occured; don't change the avatar. */
 609                         return;
 610                 }
 611
 612                 avatar = conv;
 613         }
 614
 615         if (priv->avatar != NULL) {
 616                 empathy_avatar_unref (priv->avatar);
 617         }
 618         priv->avatar = avatar;
 619
 620         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 621         image = gtk_image_new_from_pixbuf (pixbuf_view);
 622
 623         gtk_button_set_image (GTK_BUTTON (chooser), image);
 624         g_signal_emit (chooser, signals[CHANGED], 0);
 625
 626         g_object_unref (pixbuf_view);
 627         g_object_unref (pixbuf);
 628 }
 629
 630 static void
 631 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 632                                     const gchar          *filename)
 633 {
 634         gchar  *image_data = NULL;
 635         gsize   image_size = 0;
 636         GError *error = NULL;
 637
 638         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 639                 DEBUG ("Failed to load image from '%s': %s", filename,
 640                         error ? error->message : "No error given");
 641
 642                 g_clear_error (&error);
 643                 return;
 644         }
 645
 646         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 647 }
 648
 649 static gboolean
 650 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 651                               GdkDragContext     *context,
 652                               gint                x,
 653                               gint                y,
 654                               guint               time,
 655                               EmpathyAvatarChooser *chooser)
 656 {
 657         EmpathyAvatarChooserPriv *priv;
 658         GList                  *p;
 659
 660         priv = GET_PRIV (chooser);
 661
 662         for (p = context->targets; p != NULL; p = p->next) {
 663                 gchar *possible_type;
 664
 665                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 666
 667                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 668                         g_free (possible_type);
 669                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 670
 671                         return TRUE;
 672                 }
 673
 674                 g_free (possible_type);
 675         }
 676
 677         return FALSE;
 678 }
 679
 680 static void
 681 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 682                              GdkDragContext     *context,
 683                              guint               time,
 684                              EmpathyAvatarChooser *chooser)
 685 {
 686 }
 687
 688 static gboolean
 689 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 690                             GdkDragContext     *context,
 691                             gint                x,
 692                             gint                y,
 693                             guint               time,
 694                             EmpathyAvatarChooser *chooser)
 695 {
 696         EmpathyAvatarChooserPriv *priv;
 697         GList                  *p;
 698
 699         priv = GET_PRIV (chooser);
 700
 701         if (context->targets == NULL) {
 702                 return FALSE;
 703         }
 704
 705         for (p = context->targets; p != NULL; p = p->next) {
 706                 char *possible_type;
 707
 708                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 709                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 710                         g_free (possible_type);
 711                         gtk_drag_get_data (widget, context,
 712                                            GDK_POINTER_TO_ATOM (p->data),
 713                                            time);
 714
 715                         return TRUE;
 716                 }
 717
 718                 g_free (possible_type);
 719         }
 720
 721         return FALSE;
 722 }
 723
 724 static void
 725 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 726                                      GdkDragContext     *context,
 727                                      gint                x,
 728                                      gint                y,
 729                                      GtkSelectionData   *selection_data,
 730                                      guint               info,
 731                                      guint               time,
 732                                      EmpathyAvatarChooser *chooser)
 733 {
 734         gchar    *target_type;
 735         gboolean  handled = FALSE;
 736
 737         target_type = gdk_atom_name (selection_data->target);
 738         if (!strcmp (target_type, URI_LIST_TYPE)) {
 739                 GFile            *file;
 740                 GFileInputStream *input_stream;
 741                 gchar            *nl;
 742                 gchar            *data = NULL;
 743
 744                 nl = strstr (selection_data->data, "\r\n");
 745                 if (nl) {
 746                         gchar *uri;
 747
 748                         uri = g_strndup (selection_data->data,
 749                                          nl - (gchar*) selection_data->data);
 750
 751                         file = g_file_new_for_uri (uri);
 752                         g_free (uri);
 753                 } else {
 754                         file = g_file_new_for_uri (selection_data->data);
 755                 }
 756
 757                 input_stream = g_file_read (file, NULL, NULL);
 758
 759                 if (input_stream != NULL) {
 760                         GFileInfo *info;
 761
 762                         info = g_file_query_info (file,
 763                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 764                                                   0, NULL, NULL);
 765                         if (info != NULL) {
 766                                 goffset size;
 767                                 gssize bytes_read;
 768
 769                                 size = g_file_info_get_size (info);
 770                                 data = g_malloc (size);
 771
 772                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 773                                                                   data, size,
 774                                                                   NULL, NULL);
 775                                 if (bytes_read != -1) {
 776                                         avatar_chooser_set_image_from_data (
 777                                                 chooser, data,
 778                                                 (gsize) bytes_read,
 779                                                 TRUE);
 780                                         handled = TRUE;
 781                                 }
 782
 783                                 g_free (data);
 784                                 g_object_unref (info);
 785                         }
 786
 787                         g_object_unref (input_stream);
 788                 }
 789
 790                 g_object_unref (file);
 791         }
 792
 793         gtk_drag_finish (context, handled, FALSE, time);
 794 }
 795
 796 static void
 797 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 798                                   EmpathyAvatarChooser *chooser)
 799 {
 800         gchar *filename;
 801
 802         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 803
 804         if (filename) {
 805                 GtkWidget *image;
 806                 GdkPixbuf *pixbuf = NULL;
 807                 GdkPixbuf *scaled_pixbuf;
 808
 809                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 810
 811                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 812
 813                 if (pixbuf) {
 814                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 815                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 816                         g_object_unref (scaled_pixbuf);
 817                         g_object_unref (pixbuf);
 818                 } else {
 819                         gtk_image_set_from_stock (GTK_IMAGE (image),
 820                                                   "gtk-dialog-question",
 821                                                   GTK_ICON_SIZE_DIALOG);
 822                 }
 823         }
 824
 825         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 826 }
 827
 828 static void
 829 avatar_chooser_response_cb (GtkWidget            *widget,
 830                             gint                  response,
 831                             EmpathyAvatarChooser *chooser)
 832 {
 833         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 834
 835         if (response == GTK_RESPONSE_CANCEL) {
 836                 goto out;
 837         }
 838
 839         /* Check if we went non-ready since displaying the dialog. */
 840         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 841                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 842                 goto out;
 843         }
 844
 845         if (response == GTK_RESPONSE_OK) {
 846                 gchar *filename;
 847                 gchar *path;
 848
 849                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 850                 avatar_chooser_set_image_from_file (chooser, filename);
 851                 g_free (filename);
 852
 853                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 854                 if (path) {
 855                         empathy_conf_set_string (empathy_conf_get (),
 856                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 857                                                  path);
 858                         g_free (path);
 859                 }
 860         }
 861         else if (response == GTK_RESPONSE_NO) {
 862                 /* This corresponds to "No Image", not to "Cancel" */
 863                 avatar_chooser_clear_image (chooser);
 864         }
 865
 866 out:
 867         gtk_widget_destroy (widget);
 868 }
 869
 870 static void
 871 avatar_chooser_clicked_cb (GtkWidget            *button,
 872                            EmpathyAvatarChooser *chooser)
 873 {
 874         GtkFileChooser *chooser_dialog;
 875         GtkWidget      *image;
 876         gchar          *saved_dir = NULL;
 877         const gchar    *default_dir = DEFAULT_DIR;
 878         const gchar    *pics_dir;
 879         GtkFileFilter  *filter;
 880
 881         chooser_dialog = GTK_FILE_CHOOSER (
 882                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 883                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 884                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 885                                              _("No Image"),
 886                                              GTK_RESPONSE_NO,
 887                                              GTK_STOCK_CANCEL,
 888                                              GTK_RESPONSE_CANCEL,
 889                                              GTK_STOCK_OPEN,
 890                                              GTK_RESPONSE_OK,
 891                                              NULL));
 892
 893         /* Get special dirs */
 894         empathy_conf_get_string (empathy_conf_get (),
 895                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 896                                  &saved_dir);
 897         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 898                 g_free (saved_dir);
 899                 saved_dir = NULL;
 900         }
 901         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 902                 default_dir = NULL;
 903         }
 904         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 905         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 906                 pics_dir = NULL;
 907         }
 908
 909         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 910         if (saved_dir) {
 911                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 912         }
 913         else if (pics_dir) {
 914                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 915         }
 916         else if (default_dir) {
 917                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 918         } else {
 919                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 920         }
 921
 922         /* Add shortcuts to special dirs */
 923         if (saved_dir) {
 924                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 925         }
 926         else if (pics_dir) {
 927                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 928         }
 929         if (default_dir) {
 930                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 931         }
 932
 933         /* Setup preview image */
 934         image = gtk_image_new ();
 935         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 936         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 937         gtk_widget_show (image);
 938         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 939         g_signal_connect (chooser_dialog, "update-preview",
 940                           G_CALLBACK (avatar_chooser_update_preview_cb),
 941                           chooser);
 942
 943         /* Setup filers */
 944         filter = gtk_file_filter_new ();
 945         gtk_file_filter_set_name (filter, _("Images"));
 946         gtk_file_filter_add_pixbuf_formats (filter);
 947         gtk_file_chooser_add_filter (chooser_dialog, filter);
 948         filter = gtk_file_filter_new ();
 949         gtk_file_filter_set_name (filter, _("All Files"));
 950         gtk_file_filter_add_pattern(filter, "*");
 951         gtk_file_chooser_add_filter (chooser_dialog, filter);
 952
 953         /* Setup response */
 954         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 955         g_signal_connect (chooser_dialog, "response",
 956                           G_CALLBACK (avatar_chooser_response_cb),
 957                           chooser);
 958
 959         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 960         g_free (saved_dir);
 961 }
 962
 963 GtkWidget *
 964 empathy_avatar_chooser_new ()
 965 {
 966         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 967 }
 968
 969 void
 970 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 971                             EmpathyAvatar        *avatar)
 972 {
 973         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 974
 975         if (avatar != NULL) {
 976                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
 977         } else {
 978                 avatar_chooser_clear_image (chooser);
 979         }
 980 }
 981
 982 void
 983 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 984                                        const gchar          **data,
 985                                        gsize                 *data_size,
 986                                        const gchar          **mime_type)
 987 {
 988         EmpathyAvatarChooserPriv *priv;
 989
 990         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 991
 992         priv = GET_PRIV (chooser);
 993
 994         if (priv->avatar != NULL) {
 995                 if (data != NULL) {
 996                         *data = priv->avatar->data;
 997                 }
 998                 if (data_size != NULL) {
 999                         *data_size = priv->avatar->len;
1000                 }
1001                 if (mime_type != NULL) {
1002                         *mime_type = priv->avatar->format;
1003                 }
1004         } else {
1005                 if (data != NULL) {
1006                         *data = NULL;
1007                 }
1008                 if (data_size != NULL) {
1009                         *data_size = 0;
1010                 }
1011                 if (mime_type != NULL) {
1012                         *mime_type = NULL;
1013                 }
1014         }
1015 }
1016