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-lib.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-utils.h>
  33 #include <libempathy/empathy-contact-factory.h>
  34
  35 #include "empathy-avatar-chooser.h"
  36 #include "empathy-conf.h"
  37 #include "empathy-ui-utils.h"
  38
  39 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  40 #include <libempathy/empathy-debug.h>
  41
  42 #define AVATAR_SIZE_SAVE 96
  43 #define AVATAR_SIZE_VIEW 64
  44 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  45
  46 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  47 typedef struct {
  48         EmpathyContactFactory   *contact_factory;
  49         McAccount               *account;
  50         EmpathyTpContactFactory *tp_contact_factory;
  51         GtkFileChooser          *chooser_dialog;
  52
  53         gulong ready_handler_id;
  54
  55         EmpathyAvatar *avatar;
  56 } EmpathyAvatarChooserPriv;
  57
  58 static void       avatar_chooser_finalize              (GObject              *object);
  59 static void       avatar_chooser_set_account           (EmpathyAvatarChooser *self,
  60                                                         McAccount            *account);
  61 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *chooser,
  62                                                         EmpathyAvatar        *avatar,
  63                                                         GdkPixbuf            *pixbuf,
  64                                                         gboolean              set_locally);
  65 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  66                                                         GdkDragContext       *context,
  67                                                         gint                  x,
  68                                                         gint                  y,
  69                                                         guint                 time,
  70                                                         EmpathyAvatarChooser *chooser);
  71 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  72                                                         GdkDragContext       *context,
  73                                                         guint                 time,
  74                                                         EmpathyAvatarChooser *chooser);
  75 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  76                                                         GdkDragContext       *context,
  77                                                         gint                  x,
  78                                                         gint                  y,
  79                                                         guint                 time,
  80                                                         EmpathyAvatarChooser *chooser);
  81 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  82                                                         GdkDragContext       *context,
  83                                                         gint                  x,
  84                                                         gint                  y,
  85                                                         GtkSelectionData     *selection_data,
  86                                                         guint                 info,
  87                                                         guint                 time,
  88                                                         EmpathyAvatarChooser *chooser);
  89 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  90                                                         EmpathyAvatarChooser *chooser);
  91
  92 enum {
  93         CHANGED,
  94         LAST_SIGNAL
  95 };
  96
  97 enum {
  98         PROP_0,
  99         PROP_ACCOUNT
 100 };
 101
 102 static guint signals [LAST_SIGNAL];
 103
 104 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 105
 106 /*
 107  * Drag and drop stuff
 108  */
 109 #define URI_LIST_TYPE "text/uri-list"
 110
 111 enum DndTargetType {
 112         DND_TARGET_TYPE_URI_LIST
 113 };
 114
 115 static const GtkTargetEntry drop_types[] = {
 116         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 117 };
 118
 119 static void
 120 avatar_chooser_get_property (GObject    *object,
 121                              guint       param_id,
 122                              GValue     *value,
 123                              GParamSpec *pspec)
 124 {
 125         EmpathyAvatarChooserPriv *priv = GET_PRIV (object);
 126
 127         switch (param_id) {
 128         case PROP_ACCOUNT:
 129                 g_value_set_object (value, priv->account);
 130                 break;
 131         default:
 132                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 133                 break;
 134         }
 135 }
 136
 137 static void
 138 avatar_chooser_set_property (GObject      *object,
 139                              guint         param_id,
 140                              const GValue *value,
 141                              GParamSpec   *pspec)
 142 {
 143         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 144
 145         switch (param_id) {
 146         case PROP_ACCOUNT:
 147                 avatar_chooser_set_account (self, g_value_get_object (value));
 148                 break;
 149         default:
 150                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 151                 break;
 152         }
 153 }
 154
 155 static void
 156 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 157 {
 158         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 159         GParamSpec *param_spec;
 160
 161         object_class->finalize = avatar_chooser_finalize;
 162         object_class->get_property = avatar_chooser_get_property;
 163         object_class->set_property = avatar_chooser_set_property;
 164
 165         signals[CHANGED] =
 166                 g_signal_new ("changed",
 167                               G_TYPE_FROM_CLASS (klass),
 168                               G_SIGNAL_RUN_LAST,
 169                               0,
 170                               NULL, NULL,
 171                               g_cclosure_marshal_VOID__VOID,
 172                               G_TYPE_NONE, 0);
 173
 174         param_spec = g_param_spec_object ("account",
 175                                           "McAccount",
 176                                           "McAccount whose avatar should be "
 177                                           "shown and modified by this widget",
 178                                           MC_TYPE_ACCOUNT,
 179                                           G_PARAM_READWRITE |
 180                                           G_PARAM_STATIC_STRINGS);
 181         g_object_class_install_property (object_class,
 182                                          PROP_ACCOUNT,
 183                                          param_spec);
 184
 185         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 186 }
 187
 188 static void
 189 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 190 {
 191         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 192                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 193
 194         chooser->priv = priv;
 195         gtk_drag_dest_set (GTK_WIDGET (chooser),
 196                            GTK_DEST_DEFAULT_ALL,
 197                            drop_types,
 198                            G_N_ELEMENTS (drop_types),
 199                            GDK_ACTION_COPY);
 200
 201         g_signal_connect (chooser, "drag-motion",
 202                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 203                           chooser);
 204         g_signal_connect (chooser, "drag-leave",
 205                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 206                           chooser);
 207         g_signal_connect (chooser, "drag-drop",
 208                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 209                           chooser);
 210         g_signal_connect (chooser, "drag-data-received",
 211                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 212                           chooser);
 213         g_signal_connect (chooser, "clicked",
 214                           G_CALLBACK (avatar_chooser_clicked_cb),
 215                           chooser);
 216
 217         priv->contact_factory = empathy_contact_factory_dup_singleton ();
 218
 219         empathy_avatar_chooser_set (chooser, NULL);
 220 }
 221
 222 static void
 223 avatar_chooser_finalize (GObject *object)
 224 {
 225         EmpathyAvatarChooserPriv *priv;
 226
 227         priv = GET_PRIV (object);
 228
 229         avatar_chooser_set_account (EMPATHY_AVATAR_CHOOSER (object), NULL);
 230         g_assert (priv->account == NULL);
 231         g_assert (priv->tp_contact_factory == NULL);
 232
 233         g_object_unref (priv->contact_factory);
 234
 235         if (priv->avatar != NULL) {
 236                 empathy_avatar_unref (priv->avatar);
 237         }
 238
 239         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 240 }
 241
 242 static void
 243 avatar_chooser_tp_cf_ready_cb (EmpathyTpContactFactory *tp_cf,
 244                                GParamSpec              *unused,
 245                                EmpathyAvatarChooser    *self)
 246 {
 247         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 248         gboolean ready;
 249
 250         /* sanity check that we're listening on the right ETpCF */
 251         g_assert (priv->tp_contact_factory == tp_cf);
 252
 253         ready = empathy_tp_contact_factory_is_ready (tp_cf);
 254         gtk_widget_set_sensitive (GTK_WIDGET (self), ready);
 255 }
 256
 257 static void
 258 avatar_chooser_set_account (EmpathyAvatarChooser *self,
 259                             McAccount            *account)
 260 {
 261         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 262
 263         if (priv->account != NULL) {
 264                 g_object_unref (priv->account);
 265                 priv->account = NULL;
 266
 267                 g_assert (priv->tp_contact_factory != NULL);
 268
 269                 g_signal_handler_disconnect (priv->tp_contact_factory,
 270                         priv->ready_handler_id);
 271                 priv->ready_handler_id = 0;
 272
 273                 g_object_unref (priv->tp_contact_factory);
 274                 priv->tp_contact_factory = NULL;
 275         }
 276
 277         if (account != NULL) {
 278                 priv->account = g_object_ref (account);
 279                 priv->tp_contact_factory = g_object_ref (
 280                         empathy_contact_factory_get_tp_factory (
 281                                 priv->contact_factory, priv->account));
 282
 283                 priv->ready_handler_id = g_signal_connect (
 284                         priv->tp_contact_factory, "notify::ready",
 285                         G_CALLBACK (avatar_chooser_tp_cf_ready_cb), self);
 286                 avatar_chooser_tp_cf_ready_cb (priv->tp_contact_factory, NULL,
 287                         self);
 288         }
 289 }
 290
 291 static void
 292 avatar_chooser_error_show (EmpathyAvatarChooser *chooser,
 293                            const gchar          *primary_text,
 294                            const gchar          *secondary_text)
 295 {
 296         GtkWidget *parent;
 297         GtkWidget *dialog;
 298
 299         parent = gtk_widget_get_toplevel (GTK_WIDGET (chooser));
 300         if (!GTK_IS_WINDOW (parent)) {
 301                 parent = NULL;
 302         }
 303
 304         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 305                                          GTK_DIALOG_MODAL,
 306                                          GTK_MESSAGE_WARNING,
 307                                          GTK_BUTTONS_CLOSE,
 308                                          "%s", primary_text);
 309
 310         if (secondary_text != NULL) {
 311                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 312                                                           "%s", secondary_text);
 313         }
 314
 315         g_signal_connect (dialog, "response",
 316                           G_CALLBACK (gtk_widget_destroy), NULL);
 317         gtk_widget_show (dialog);
 318
 319 }
 320
 321 static gboolean
 322 str_in_strv (const gchar  *str,
 323              gchar **strv)
 324 {
 325         if (strv == NULL) {
 326                 return FALSE;
 327         }
 328
 329         while (*strv != NULL) {
 330                 if (g_str_equal (str, *strv)) {
 331                         return TRUE;
 332                 }
 333                 strv++;
 334         }
 335         return FALSE;
 336 }
 337
 338 /* The caller must free the strings stored in satisfactory_format_name and
 339  * satisfactory_mime_type.
 340  */
 341 static gboolean
 342 avatar_chooser_need_mime_type_conversion (const gchar *current_mime_type,
 343                                           gchar      **accepted_mime_types,
 344                                           gchar      **satisfactory_format_name,
 345                                           gchar      **satisfactory_mime_type)
 346 {
 347         gchar   *good_mime_types[] = {"image/jpeg", "image/png", NULL};
 348         guint    i;
 349         GSList  *formats, *l;
 350         gboolean found = FALSE;
 351
 352         *satisfactory_format_name = NULL;
 353         *satisfactory_mime_type = NULL;
 354
 355         /* If there is no accepted format there is nothing we can do */
 356         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 357                 return TRUE;
 358         }
 359
 360         /* If the current mime type is good and accepted, don't change it!
 361          * jpeg is compress better pictures, but png is better for logos and
 362          * could have an alpha layer. */
 363         if (str_in_strv (current_mime_type, good_mime_types) &&
 364             str_in_strv (current_mime_type, accepted_mime_types)) {
 365                 *satisfactory_mime_type = g_strdup (current_mime_type);
 366                 *satisfactory_format_name = g_strdup (current_mime_type +
 367                                                       strlen ("image/"));
 368                 return FALSE;
 369         }
 370
 371         /* The current mime type is either not accepted or not good to use.
 372          * Check if one of the good format is supported... */
 373         for (i = 0; good_mime_types[i] != NULL;  i++) {
 374                 if (str_in_strv (good_mime_types[i], accepted_mime_types)) {
 375                         *satisfactory_mime_type = g_strdup (good_mime_types[i]);
 376                         *satisfactory_format_name = g_strdup (good_mime_types[i] +
 377                                                               strlen ("image/"));
 378                         return TRUE;
 379                 }
 380         }
 381
 382         /* Pick the first supported format we can write */
 383         formats = gdk_pixbuf_get_formats ();
 384         for (l = formats; !found && l != NULL; l = l->next) {
 385                 GdkPixbufFormat *format = l->data;
 386                 gchar **format_mime_types;
 387                 gchar **iter;
 388
 389                 if (!gdk_pixbuf_format_is_writable (format)) {
 390                         continue;
 391                 }
 392
 393                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 394                 for (iter = format_mime_types; *iter != NULL; iter++) {
 395                         if (str_in_strv (*iter, accepted_mime_types)) {
 396                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 397                                 *satisfactory_mime_type = g_strdup (*iter);
 398                                 found = TRUE;
 399                                 break;
 400                         }
 401                 }
 402                 g_strfreev (format_mime_types);
 403         }
 404         g_slist_free (formats);
 405
 406         return TRUE;
 407 }
 408
 409 static EmpathyAvatar *
 410 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 411                                         GdkPixbuf            *pixbuf,
 412                                         EmpathyAvatar        *avatar)
 413 {
 414         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 415         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 416         guint                     max_width = 0, max_height = 0, max_size = 0;
 417         gchar                   **mime_types = NULL;
 418         gboolean                  needs_conversion = FALSE;
 419         gint                      width, height;
 420         gchar                    *new_format_name = NULL;
 421         gchar                    *new_mime_type = NULL;
 422         gdouble                   min_factor, max_factor;
 423         gdouble                   factor;
 424         gchar                    *converted_image_data = NULL;
 425         gsize                     converted_image_size = 0;
 426
 427         /* This should only be called if the user is setting a new avatar,
 428          * which should only be allowed once the avatar requirements have been
 429          * discovered.
 430          */
 431         g_return_val_if_fail (tp_cf != NULL, NULL);
 432         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 433                 NULL);
 434
 435         g_object_get (tp_cf,
 436                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 437                 "avatar-max-width", &max_width,
 438                 "avatar-max-height", &max_height,
 439                 "avatar-max-size", &max_size,
 440                 NULL);
 441
 442         /* Smaller is the factor, smaller will be the image.
 443          * 0 is an empty image, 1 is the full size. */
 444         min_factor = 0;
 445         max_factor = 1;
 446         factor = 1;
 447
 448         /* Check if we need to convert to another image format */
 449         if (avatar_chooser_need_mime_type_conversion (avatar->format,
 450                                                       mime_types,
 451                                                       &new_format_name,
 452                                                       &new_mime_type)) {
 453                 DEBUG ("Format conversion needed, we'll use mime type '%s' "
 454                        "and format name '%s'. Current mime type is '%s'",
 455                        new_mime_type, new_format_name, avatar->format);
 456                 needs_conversion = TRUE;
 457         }
 458         g_strfreev (mime_types);
 459
 460         /* If there is no format we can use, report error to the user. */
 461         if (new_mime_type == NULL || new_format_name == NULL) {
 462                 avatar_chooser_error_show (chooser, _("Couldn't convert image"),
 463                                 _("None of the accepted image formats is "
 464                                   "supported on your system"));
 465                 return NULL;
 466         }
 467
 468         /* If width or height are too big, it needs converting. */
 469         width = gdk_pixbuf_get_width (pixbuf);
 470         height = gdk_pixbuf_get_height (pixbuf);
 471         if ((max_width > 0 && width > max_width) ||
 472             (max_height > 0 && height > max_height)) {
 473                 gdouble h_factor, v_factor;
 474
 475                 h_factor = (gdouble) max_width / width;
 476                 v_factor = (gdouble) max_height / height;
 477                 factor = max_factor = MIN (h_factor, v_factor);
 478
 479                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 480                        width, height, max_width, max_height);
 481
 482                 needs_conversion = TRUE;
 483         }
 484
 485         /* If the data len is too big and no other conversion is needed,
 486          * try with a lower factor. */
 487         if (max_size > 0 && avatar->len > max_size && !needs_conversion) {
 488                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 489                        "(max is %u bytes), conversion needed.",
 490                        avatar->len, max_size);
 491
 492                 factor = 0.5;
 493                 needs_conversion = TRUE;
 494         }
 495
 496         /* If no conversion is needed, return the avatar */
 497         if (!needs_conversion) {
 498                 g_free (new_format_name);
 499                 g_free (new_mime_type);
 500                 return empathy_avatar_ref (avatar);
 501         }
 502
 503         do {
 504                 GdkPixbuf *pixbuf_scaled = NULL;
 505                 gboolean   saved;
 506                 gint       new_width, new_height;
 507                 GError    *error = NULL;
 508
 509                 g_free (converted_image_data);
 510
 511                 if (factor != 1) {
 512                         new_width = width * factor;
 513                         new_height = height * factor;
 514                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 515                                                                  new_width,
 516                                                                  new_height,
 517                                                                  GDK_INTERP_HYPER);
 518                 } else {
 519                         new_width = width;
 520                         new_height = height;
 521                         pixbuf_scaled = g_object_ref (pixbuf);
 522                 }
 523
 524                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 525                         new_width, new_height, new_format_name);
 526
 527                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 528                                                    &converted_image_data,
 529                                                    &converted_image_size,
 530                                                    new_format_name,
 531                                                    &error, NULL);
 532
 533                 if (!saved) {
 534                         g_free (new_format_name);
 535                         g_free (new_mime_type);
 536                         avatar_chooser_error_show (chooser,
 537                                 _("Couldn't convert image"),
 538                                 error ? error->message : NULL);
 539                         g_clear_error (&error);
 540                         return NULL;
 541                 }
 542
 543                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 544                         converted_image_size);
 545
 546                 if (max_size == 0)
 547                         break;
 548
 549                 /* Make a binary search for the bigest factor that produce
 550                  * an image data size less than max_size */
 551                 if (converted_image_size > max_size)
 552                         max_factor = factor;
 553                 if (converted_image_size < max_size)
 554                         min_factor = factor;
 555                 factor = (min_factor + max_factor)/2;
 556
 557                 /* We are done if either:
 558                  * - min_factor == max_factor. That happens if we resized to
 559                  *   the max required dimension and the produced data size is
 560                  *   less than max_size.
 561                  * - The data size is close enough to max_size. Here we accept
 562                  *   a difference of 1k.
 563                  */
 564         } while (min_factor != max_factor &&
 565                  ABS (max_size - converted_image_size) > 1024);
 566         g_free (new_format_name);
 567
 568         /* Takes ownership of new_mime_type and converted_image_data */
 569         avatar = empathy_avatar_new (converted_image_data,
 570                 converted_image_size, new_mime_type, NULL);
 571
 572         return avatar;
 573 }
 574
 575 static void
 576 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 577 {
 578         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 579         GtkWidget *image;
 580
 581         if (priv->avatar != NULL) {
 582                 empathy_avatar_unref (priv->avatar);
 583                 priv->avatar = NULL;
 584         }
 585
 586         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 587         gtk_button_set_image (GTK_BUTTON (chooser), image);
 588         g_signal_emit (chooser, signals[CHANGED], 0);
 589 }
 590
 591 static void
 592 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 593                                     gchar                *data,
 594                                     gsize                 size,
 595                                     gboolean              set_locally)
 596 {
 597         GdkPixbuf     *pixbuf;
 598         EmpathyAvatar *avatar = NULL;
 599         gchar         *mime_type = NULL;
 600
 601         if (data == NULL) {
 602                 avatar_chooser_clear_image (chooser);
 603                 return;
 604         }
 605
 606         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 607         if (pixbuf == NULL) {
 608                 g_free (data);
 609                 return;
 610         }
 611
 612         /* avatar takes ownership of data and mime_type */
 613         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 614
 615         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 616 }
 617
 618 static void
 619 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 620                                       EmpathyAvatar        *avatar,
 621                                       gboolean              set_locally)
 622 {
 623         GdkPixbuf *pixbuf;
 624         gchar     *mime_type = NULL;
 625
 626         g_assert (avatar != NULL);
 627
 628         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 629                                                     avatar->len,
 630                                                     &mime_type);
 631         if (pixbuf == NULL) {
 632                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 633                 return;
 634         }
 635
 636         if (avatar->format == NULL) {
 637                 avatar->format = mime_type;
 638         } else {
 639                 if (strcmp (mime_type, avatar->format)) {
 640                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 641                                 avatar->format, mime_type);
 642                 }
 643                 g_free (mime_type);
 644         }
 645
 646         empathy_avatar_ref (avatar);
 647
 648         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 649 }
 650
 651 static void
 652 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 653                           EmpathyAvatar        *avatar,
 654                           GdkPixbuf            *pixbuf,
 655                           gboolean              set_locally)
 656 {
 657         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 658         GdkPixbuf                *pixbuf_view;
 659         GtkWidget                *image;
 660
 661         g_assert (avatar != NULL);
 662         g_assert (pixbuf != NULL);
 663
 664         if (set_locally) {
 665                 EmpathyAvatar *conv;
 666
 667                 conv = avatar_chooser_maybe_convert_and_scale (chooser,
 668                         pixbuf, avatar);
 669                 empathy_avatar_unref (avatar);
 670
 671                 if (conv == NULL) {
 672                         /* An error occured; don't change the avatar. */
 673                         return;
 674                 }
 675
 676                 avatar = conv;
 677         }
 678
 679         if (priv->avatar != NULL) {
 680                 empathy_avatar_unref (priv->avatar);
 681         }
 682         priv->avatar = avatar;
 683
 684         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 685         image = gtk_image_new_from_pixbuf (pixbuf_view);
 686
 687         gtk_button_set_image (GTK_BUTTON (chooser), image);
 688         g_signal_emit (chooser, signals[CHANGED], 0);
 689
 690         g_object_unref (pixbuf_view);
 691         g_object_unref (pixbuf);
 692 }
 693
 694 static void
 695 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 696                                     const gchar          *filename)
 697 {
 698         gchar  *image_data = NULL;
 699         gsize   image_size = 0;
 700         GError *error = NULL;
 701
 702         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 703                 DEBUG ("Failed to load image from '%s': %s", filename,
 704                         error ? error->message : "No error given");
 705
 706                 g_clear_error (&error);
 707                 return;
 708         }
 709
 710         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 711 }
 712
 713 static gboolean
 714 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 715                               GdkDragContext     *context,
 716                               gint                x,
 717                               gint                y,
 718                               guint               time,
 719                               EmpathyAvatarChooser *chooser)
 720 {
 721         EmpathyAvatarChooserPriv *priv;
 722         GList                  *p;
 723
 724         priv = GET_PRIV (chooser);
 725
 726         for (p = context->targets; p != NULL; p = p->next) {
 727                 gchar *possible_type;
 728
 729                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 730
 731                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 732                         g_free (possible_type);
 733                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 734
 735                         return TRUE;
 736                 }
 737
 738                 g_free (possible_type);
 739         }
 740
 741         return FALSE;
 742 }
 743
 744 static void
 745 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 746                              GdkDragContext     *context,
 747                              guint               time,
 748                              EmpathyAvatarChooser *chooser)
 749 {
 750 }
 751
 752 static gboolean
 753 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 754                             GdkDragContext     *context,
 755                             gint                x,
 756                             gint                y,
 757                             guint               time,
 758                             EmpathyAvatarChooser *chooser)
 759 {
 760         EmpathyAvatarChooserPriv *priv;
 761         GList                  *p;
 762
 763         priv = GET_PRIV (chooser);
 764
 765         if (context->targets == NULL) {
 766                 return FALSE;
 767         }
 768
 769         for (p = context->targets; p != NULL; p = p->next) {
 770                 char *possible_type;
 771
 772                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 773                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 774                         g_free (possible_type);
 775                         gtk_drag_get_data (widget, context,
 776                                            GDK_POINTER_TO_ATOM (p->data),
 777                                            time);
 778
 779                         return TRUE;
 780                 }
 781
 782                 g_free (possible_type);
 783         }
 784
 785         return FALSE;
 786 }
 787
 788 static void
 789 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 790                                      GdkDragContext     *context,
 791                                      gint                x,
 792                                      gint                y,
 793                                      GtkSelectionData   *selection_data,
 794                                      guint               info,
 795                                      guint               time,
 796                                      EmpathyAvatarChooser *chooser)
 797 {
 798         gchar    *target_type;
 799         gboolean  handled = FALSE;
 800
 801         target_type = gdk_atom_name (selection_data->target);
 802         if (!strcmp (target_type, URI_LIST_TYPE)) {
 803                 GFile            *file;
 804                 GFileInputStream *input_stream;
 805                 gchar            *nl;
 806                 gchar            *data = NULL;
 807
 808                 nl = strstr (selection_data->data, "\r\n");
 809                 if (nl) {
 810                         gchar *uri;
 811
 812                         uri = g_strndup (selection_data->data,
 813                                          nl - (gchar*) selection_data->data);
 814
 815                         file = g_file_new_for_uri (uri);
 816                         g_free (uri);
 817                 } else {
 818                         file = g_file_new_for_uri (selection_data->data);
 819                 }
 820
 821                 input_stream = g_file_read (file, NULL, NULL);
 822
 823                 if (input_stream != NULL) {
 824                         GFileInfo *info;
 825
 826                         info = g_file_query_info (file,
 827                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 828                                                   0, NULL, NULL);
 829                         if (info != NULL) {
 830                                 goffset size;
 831                                 gssize bytes_read;
 832
 833                                 size = g_file_info_get_size (info);
 834                                 data = g_malloc (size);
 835
 836                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 837                                                                   data, size,
 838                                                                   NULL, NULL);
 839                                 if (bytes_read != -1) {
 840                                         avatar_chooser_set_image_from_data (
 841                                                 chooser, data,
 842                                                 (gsize) bytes_read,
 843                                                 TRUE);
 844                                         handled = TRUE;
 845                                 }
 846
 847                                 g_free (data);
 848                                 g_object_unref (info);
 849                         }
 850
 851                         g_object_unref (input_stream);
 852                 }
 853
 854                 g_object_unref (file);
 855         }
 856
 857         gtk_drag_finish (context, handled, FALSE, time);
 858 }
 859
 860 static void
 861 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 862                                   EmpathyAvatarChooser *chooser)
 863 {
 864         gchar *filename;
 865
 866         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 867
 868         if (filename) {
 869                 GtkWidget *image;
 870                 GdkPixbuf *pixbuf = NULL;
 871                 GdkPixbuf *scaled_pixbuf;
 872
 873                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 874
 875                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 876
 877                 if (pixbuf) {
 878                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 879                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 880                         g_object_unref (scaled_pixbuf);
 881                         g_object_unref (pixbuf);
 882                 } else {
 883                         gtk_image_set_from_stock (GTK_IMAGE (image),
 884                                                   "gtk-dialog-question",
 885                                                   GTK_ICON_SIZE_DIALOG);
 886                 }
 887
 888         g_free (filename);
 889         }
 890
 891         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 892 }
 893
 894 static void
 895 avatar_chooser_response_cb (GtkWidget            *widget,
 896                             gint                  response,
 897                             EmpathyAvatarChooser *chooser)
 898 {
 899         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 900
 901         priv->chooser_dialog = NULL;
 902
 903         if (response == GTK_RESPONSE_CANCEL) {
 904                 goto out;
 905         }
 906
 907         /* Check if we went non-ready since displaying the dialog. */
 908         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 909                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 910                 goto out;
 911         }
 912
 913         if (response == GTK_RESPONSE_OK) {
 914                 gchar *filename;
 915                 gchar *path;
 916
 917                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 918                 avatar_chooser_set_image_from_file (chooser, filename);
 919                 g_free (filename);
 920
 921                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 922                 if (path) {
 923                         empathy_conf_set_string (empathy_conf_get (),
 924                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 925                                                  path);
 926                         g_free (path);
 927                 }
 928         }
 929         else if (response == GTK_RESPONSE_NO) {
 930                 /* This corresponds to "No Image", not to "Cancel" */
 931                 avatar_chooser_clear_image (chooser);
 932         }
 933
 934 out:
 935         gtk_widget_destroy (widget);
 936 }
 937
 938 static void
 939 avatar_chooser_clicked_cb (GtkWidget            *button,
 940                            EmpathyAvatarChooser *chooser)
 941 {
 942         GtkFileChooser *chooser_dialog;
 943         GtkWidget      *image;
 944         gchar          *saved_dir = NULL;
 945         const gchar    *default_dir = DEFAULT_DIR;
 946         const gchar    *pics_dir;
 947         GtkFileFilter  *filter;
 948         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 949
 950         if (priv->chooser_dialog) {
 951                 gtk_window_present (GTK_WINDOW (priv->chooser_dialog));
 952                 return;
 953         }
 954
 955         priv->chooser_dialog = GTK_FILE_CHOOSER (
 956                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 957                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 958                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 959                                              _("No Image"),
 960                                              GTK_RESPONSE_NO,
 961                                              GTK_STOCK_CANCEL,
 962                                              GTK_RESPONSE_CANCEL,
 963                                              GTK_STOCK_OPEN,
 964                                              GTK_RESPONSE_OK,
 965                                              NULL));
 966         chooser_dialog = priv->chooser_dialog;
 967         gtk_window_set_destroy_with_parent (GTK_WINDOW (chooser_dialog), TRUE);
 968
 969         /* Get special dirs */
 970         empathy_conf_get_string (empathy_conf_get (),
 971                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 972                                  &saved_dir);
 973         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 974                 g_free (saved_dir);
 975                 saved_dir = NULL;
 976         }
 977         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 978                 default_dir = NULL;
 979         }
 980         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 981         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 982                 pics_dir = NULL;
 983         }
 984
 985         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 986         if (saved_dir) {
 987                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 988         }
 989         else if (pics_dir) {
 990                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 991         }
 992         else if (default_dir) {
 993                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 994         } else {
 995                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 996         }
 997
 998         /* Add shortcuts to special dirs */
 999         if (saved_dir) {
1000                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
1001         }
1002         else if (pics_dir) {
1003                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
1004         }
1005         if (default_dir) {
1006                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
1007         }
1008
1009         /* Setup preview image */
1010         image = gtk_image_new ();
1011         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
1012         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
1013         gtk_widget_show (image);
1014         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
1015         g_signal_connect (chooser_dialog, "update-preview",
1016                           G_CALLBACK (avatar_chooser_update_preview_cb),
1017                           chooser);
1018
1019         /* Setup filers */
1020         filter = gtk_file_filter_new ();
1021         gtk_file_filter_set_name (filter, _("Images"));
1022         gtk_file_filter_add_pixbuf_formats (filter);
1023         gtk_file_chooser_add_filter (chooser_dialog, filter);
1024         filter = gtk_file_filter_new ();
1025         gtk_file_filter_set_name (filter, _("All Files"));
1026         gtk_file_filter_add_pattern(filter, "*");
1027         gtk_file_chooser_add_filter (chooser_dialog, filter);
1028
1029         /* Setup response */
1030         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
1031         g_signal_connect (chooser_dialog, "response",
1032                           G_CALLBACK (avatar_chooser_response_cb),
1033                           chooser);
1034
1035         gtk_widget_show (GTK_WIDGET (chooser_dialog));
1036         g_free (saved_dir);
1037 }
1038
1039 GtkWidget *
1040 empathy_avatar_chooser_new ()
1041 {
1042         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
1043 }
1044
1045 void
1046 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
1047                             EmpathyAvatar        *avatar)
1048 {
1049         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1050
1051         if (avatar != NULL) {
1052                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
1053         } else {
1054                 avatar_chooser_clear_image (chooser);
1055         }
1056 }
1057
1058 void
1059 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
1060                                        const gchar          **data,
1061                                        gsize                 *data_size,
1062                                        const gchar          **mime_type)
1063 {
1064         EmpathyAvatarChooserPriv *priv;
1065
1066         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1067
1068         priv = GET_PRIV (chooser);
1069
1070         if (priv->avatar != NULL) {
1071                 if (data != NULL) {
1072                         *data = priv->avatar->data;
1073                 }
1074                 if (data_size != NULL) {
1075                         *data_size = priv->avatar->len;
1076                 }
1077                 if (mime_type != NULL) {
1078                         *mime_type = priv->avatar->format;
1079                 }
1080         } else {
1081                 if (data != NULL) {
1082                         *data = NULL;
1083                 }
1084                 if (data_size != NULL) {
1085                         *data_size = 0;
1086                 }
1087                 if (mime_type != NULL) {
1088                         *mime_type = NULL;
1089                 }
1090         }
1091 }
1092