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         gchar *type = NULL;
 315
 316         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 317                 return FALSE;
 318         }
 319
 320         /* Special-case png and jpeg to avoid accidentally saving to something
 321          * uncompressed like bmp. This assumes that we can write image/png and
 322          * image/jpeg; if this isn't true then something's really wrong with
 323          * GdkPixbuf.
 324          */
 325         if (str_in_strv ("image/jpeg", accepted_mime_types)) {
 326                 name = g_strdup ("jpeg");
 327                 type = g_strdup ("image/jpeg");
 328         } else if (str_in_strv ("image/png", accepted_mime_types)) {
 329                 name = g_strdup ("png");
 330                 type = g_strdup ("image/png");
 331         } else {
 332                 GSList  *formats, *l;
 333                 gboolean found = FALSE;
 334
 335                 formats = gdk_pixbuf_get_formats ();
 336                 for (l = formats; !found && l != NULL; l = l->next) {
 337                         GdkPixbufFormat *format = l->data;
 338                         gchar **format_mime_types;
 339                         gchar **iter;
 340
 341                         if (!gdk_pixbuf_format_is_writable (format)) {
 342                                 continue;
 343                         }
 344
 345                         format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 346                         for (iter = format_mime_types; *iter != NULL; iter++) {
 347                                 if (str_in_strv (*iter, accepted_mime_types)) {
 348                                         name = gdk_pixbuf_format_get_name (format);
 349                                         type = g_strdup (*iter);
 350                                         found = TRUE;
 351                                         break;
 352                                 }
 353                         }
 354                         g_strfreev (format_mime_types);
 355                 }
 356
 357                 g_slist_free (formats);
 358         }
 359
 360         *satisfactory_format_name = name;
 361         *satisfactory_mime_type = type;
 362
 363         return name != NULL;
 364 }
 365
 366 static EmpathyAvatar *
 367 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 368                                         GdkPixbuf            *pixbuf,
 369                                         EmpathyAvatar        *avatar)
 370 {
 371         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 372         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 373         gint                      max_width = 0, max_height = 0, max_size = 0;
 374         gchar                   **mime_types = NULL;
 375         gboolean                  needs_conversion = FALSE;
 376         gint                      width, height;
 377         gchar                    *new_format_name = NULL;
 378         gchar                    *new_mime_type = NULL;
 379         gdouble                   min_factor, max_factor;
 380         gdouble                   factor;
 381         gchar                    *converted_image_data = NULL;
 382         gsize                     converted_image_size = 0;
 383
 384         /* This should only be called if the user is setting a new avatar,
 385          * which should only be allowed once the avatar requirements have been
 386          * discovered.
 387          */
 388         g_return_val_if_fail (tp_cf != NULL, NULL);
 389         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 390                 NULL);
 391
 392         g_object_get (tp_cf,
 393                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 394                 "avatar-max-width", &max_width,
 395                 "avatar-max-height", &max_height,
 396                 "avatar-max-size", &max_size,
 397                 NULL);
 398
 399         /* Smaller is the factor, smaller will be the image.
 400          * 0 is an empty image, 1 is the full size. */
 401         min_factor = 0;
 402         max_factor = 1;
 403         factor = 1;
 404
 405         if (!can_satisfy_mime_type_requirements (mime_types, &new_format_name,
 406                                                  &new_mime_type)) {
 407                 /* FIXME: That should be reported to the user */
 408                 DEBUG ("Mon dieu! Can't convert to any acceptable format!");
 409                 g_strfreev (mime_types);
 410                 return NULL;
 411         }
 412
 413         /* If the avatar is not already in the right type, it needs converting. */
 414         if (!str_in_strv (avatar->format, mime_types)) {
 415                 DEBUG ("Image format %s not supported by the protocol",
 416                         avatar->format);
 417
 418                 needs_conversion = TRUE;
 419         }
 420         g_strfreev (mime_types);
 421
 422         /* If width or height are too big, it needs converting. */
 423         width = gdk_pixbuf_get_width (pixbuf);
 424         height = gdk_pixbuf_get_height (pixbuf);
 425         if ((max_width > 0 && width > max_width) ||
 426             (max_height > 0 && height > max_height)) {
 427                 gdouble h_factor, v_factor;
 428
 429                 h_factor = (gdouble) max_width / width;
 430                 v_factor = (gdouble) max_height / height;
 431                 factor = max_factor = MIN (h_factor, v_factor);
 432
 433                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 434                        width, height, max_width, max_height);
 435
 436                 needs_conversion = TRUE;
 437         }
 438
 439         /* If the data len is too big and no other conversion is needed,
 440          * try with a lower factor. */
 441         if (max_size > 0 && avatar->len > max_size && !needs_conversion) {
 442                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 443                        "(max is %"G_GSIZE_FORMAT" bytes), conversion needed.",
 444                        avatar->len, max_size);
 445
 446                 factor = 0.5;
 447                 needs_conversion = TRUE;
 448         }
 449
 450         /* If no conversion is needed, return the avatar */
 451         if (!needs_conversion) {
 452                 g_free (new_format_name);
 453                 g_free (new_mime_type);
 454                 return empathy_avatar_ref (avatar);
 455         }
 456
 457         do {
 458                 GdkPixbuf *pixbuf_scaled = NULL;
 459                 gboolean   saved;
 460                 gint       new_width, new_height;
 461                 GError    *error = NULL;
 462
 463                 g_free (converted_image_data);
 464
 465                 if (factor != 1) {
 466                         new_width = width * factor;
 467                         new_height = height * factor;
 468                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 469                                                                  new_width,
 470                                                                  new_height,
 471                                                                  GDK_INTERP_HYPER);
 472                 } else {
 473                         new_width = width;
 474                         new_height = height;
 475                         pixbuf_scaled = g_object_ref (pixbuf);
 476                 }
 477
 478                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 479                         new_width, new_height, new_format_name);
 480
 481                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 482                                                    &converted_image_data,
 483                                                    &converted_image_size,
 484                                                    new_format_name,
 485                                                    &error, NULL);
 486
 487                 if (!saved) {
 488                         DEBUG ("Couldn't convert image: %s", error->message);
 489                         g_clear_error (&error);
 490                         g_free (new_format_name);
 491                         g_free (new_mime_type);
 492                         return NULL;
 493                 }
 494
 495                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 496                         converted_image_size);
 497
 498                 if (max_size == 0)
 499                         break;
 500
 501                 /* Make a dichotomic search for the optimal factor that produce
 502                  * an image data size close to max_size */
 503                 if (converted_image_size > max_size)
 504                         max_factor = factor;
 505                 if (converted_image_size < max_size)
 506                         min_factor = factor;
 507                 factor = min_factor + (max_factor - min_factor)/2;
 508         } while (min_factor != max_factor &&
 509                  ABS (max_size - converted_image_size) > 1000);
 510         g_free (new_format_name);
 511
 512         /* Takes ownership of new_mime_type and converted_image_data */
 513         avatar = empathy_avatar_new (converted_image_data,
 514                 converted_image_size, new_mime_type, NULL);
 515
 516         return avatar;
 517 }
 518
 519 static void
 520 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 521 {
 522         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 523         GtkWidget *image;
 524
 525         if (priv->avatar == NULL) {
 526                 return;
 527         }
 528
 529         empathy_avatar_unref (priv->avatar);
 530         priv->avatar = NULL;
 531
 532         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 533         gtk_button_set_image (GTK_BUTTON (chooser), image);
 534         g_signal_emit (chooser, signals[CHANGED], 0);
 535 }
 536
 537 static void
 538 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 539                                     gchar                *data,
 540                                     gsize                 size,
 541                                     gboolean              set_locally)
 542 {
 543         GdkPixbuf     *pixbuf;
 544         EmpathyAvatar *avatar = NULL;
 545         gchar         *mime_type = NULL;
 546
 547         if (data == NULL) {
 548                 avatar_chooser_clear_image (chooser);
 549                 g_free (data);
 550                 return;
 551         }
 552
 553         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 554         if (pixbuf == NULL) {
 555                 g_free (data);
 556                 return;
 557         }
 558
 559         /* avatar takes ownership of data and mime_type */
 560         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 561
 562         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 563 }
 564
 565 static void
 566 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 567                                       EmpathyAvatar        *avatar,
 568                                       gboolean              set_locally)
 569 {
 570         GdkPixbuf *pixbuf;
 571         gchar     *mime_type = NULL;
 572
 573         g_assert (avatar != NULL);
 574
 575         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 576                                                     avatar->len,
 577                                                     &mime_type);
 578         if (pixbuf == NULL) {
 579                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 580                 return;
 581         }
 582
 583         if (avatar->format == NULL) {
 584                 avatar->format = mime_type;
 585         } else {
 586                 if (strcmp (mime_type, avatar->format)) {
 587                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 588                                 avatar->format, mime_type);
 589                 }
 590                 g_free (mime_type);
 591         }
 592
 593         empathy_avatar_ref (avatar);
 594
 595         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 596 }
 597
 598 static void
 599 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 600                           EmpathyAvatar        *avatar,
 601                           GdkPixbuf            *pixbuf,
 602                           gboolean              set_locally)
 603 {
 604         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 605         GdkPixbuf                *pixbuf_view;
 606         GtkWidget                *image;
 607
 608         g_assert (avatar != NULL);
 609         g_assert (pixbuf != NULL);
 610
 611         if (set_locally) {
 612                 EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
 613                         chooser, pixbuf, avatar);
 614                 empathy_avatar_unref (avatar);
 615
 616                 if (conv == NULL) {
 617                         /* An error occured; don't change the avatar. */
 618                         return;
 619                 }
 620
 621                 avatar = conv;
 622         }
 623
 624         if (priv->avatar != NULL) {
 625                 empathy_avatar_unref (priv->avatar);
 626         }
 627         priv->avatar = avatar;
 628
 629         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 630         image = gtk_image_new_from_pixbuf (pixbuf_view);
 631
 632         gtk_button_set_image (GTK_BUTTON (chooser), image);
 633         g_signal_emit (chooser, signals[CHANGED], 0);
 634
 635         g_object_unref (pixbuf_view);
 636         g_object_unref (pixbuf);
 637 }
 638
 639 static void
 640 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 641                                     const gchar          *filename)
 642 {
 643         gchar  *image_data = NULL;
 644         gsize   image_size = 0;
 645         GError *error = NULL;
 646
 647         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 648                 DEBUG ("Failed to load image from '%s': %s", filename,
 649                         error ? error->message : "No error given");
 650
 651                 g_clear_error (&error);
 652                 return;
 653         }
 654
 655         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 656 }
 657
 658 static gboolean
 659 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 660                               GdkDragContext     *context,
 661                               gint                x,
 662                               gint                y,
 663                               guint               time,
 664                               EmpathyAvatarChooser *chooser)
 665 {
 666         EmpathyAvatarChooserPriv *priv;
 667         GList                  *p;
 668
 669         priv = GET_PRIV (chooser);
 670
 671         for (p = context->targets; p != NULL; p = p->next) {
 672                 gchar *possible_type;
 673
 674                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 675
 676                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 677                         g_free (possible_type);
 678                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 679
 680                         return TRUE;
 681                 }
 682
 683                 g_free (possible_type);
 684         }
 685
 686         return FALSE;
 687 }
 688
 689 static void
 690 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 691                              GdkDragContext     *context,
 692                              guint               time,
 693                              EmpathyAvatarChooser *chooser)
 694 {
 695 }
 696
 697 static gboolean
 698 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 699                             GdkDragContext     *context,
 700                             gint                x,
 701                             gint                y,
 702                             guint               time,
 703                             EmpathyAvatarChooser *chooser)
 704 {
 705         EmpathyAvatarChooserPriv *priv;
 706         GList                  *p;
 707
 708         priv = GET_PRIV (chooser);
 709
 710         if (context->targets == NULL) {
 711                 return FALSE;
 712         }
 713
 714         for (p = context->targets; p != NULL; p = p->next) {
 715                 char *possible_type;
 716
 717                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 718                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 719                         g_free (possible_type);
 720                         gtk_drag_get_data (widget, context,
 721                                            GDK_POINTER_TO_ATOM (p->data),
 722                                            time);
 723
 724                         return TRUE;
 725                 }
 726
 727                 g_free (possible_type);
 728         }
 729
 730         return FALSE;
 731 }
 732
 733 static void
 734 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 735                                      GdkDragContext     *context,
 736                                      gint                x,
 737                                      gint                y,
 738                                      GtkSelectionData   *selection_data,
 739                                      guint               info,
 740                                      guint               time,
 741                                      EmpathyAvatarChooser *chooser)
 742 {
 743         gchar    *target_type;
 744         gboolean  handled = FALSE;
 745
 746         target_type = gdk_atom_name (selection_data->target);
 747         if (!strcmp (target_type, URI_LIST_TYPE)) {
 748                 GFile            *file;
 749                 GFileInputStream *input_stream;
 750                 gchar            *nl;
 751                 gchar            *data = NULL;
 752
 753                 nl = strstr (selection_data->data, "\r\n");
 754                 if (nl) {
 755                         gchar *uri;
 756
 757                         uri = g_strndup (selection_data->data,
 758                                          nl - (gchar*) selection_data->data);
 759
 760                         file = g_file_new_for_uri (uri);
 761                         g_free (uri);
 762                 } else {
 763                         file = g_file_new_for_uri (selection_data->data);
 764                 }
 765
 766                 input_stream = g_file_read (file, NULL, NULL);
 767
 768                 if (input_stream != NULL) {
 769                         GFileInfo *info;
 770
 771                         info = g_file_query_info (file,
 772                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 773                                                   0, NULL, NULL);
 774                         if (info != NULL) {
 775                                 goffset size;
 776                                 gssize bytes_read;
 777
 778                                 size = g_file_info_get_size (info);
 779                                 data = g_malloc (size);
 780
 781                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 782                                                                   data, size,
 783                                                                   NULL, NULL);
 784                                 if (bytes_read != -1) {
 785                                         avatar_chooser_set_image_from_data (
 786                                                 chooser, data,
 787                                                 (gsize) bytes_read,
 788                                                 TRUE);
 789                                         handled = TRUE;
 790                                 }
 791
 792                                 g_free (data);
 793                                 g_object_unref (info);
 794                         }
 795
 796                         g_object_unref (input_stream);
 797                 }
 798
 799                 g_object_unref (file);
 800         }
 801
 802         gtk_drag_finish (context, handled, FALSE, time);
 803 }
 804
 805 static void
 806 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 807                                   EmpathyAvatarChooser *chooser)
 808 {
 809         gchar *filename;
 810
 811         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 812
 813         if (filename) {
 814                 GtkWidget *image;
 815                 GdkPixbuf *pixbuf = NULL;
 816                 GdkPixbuf *scaled_pixbuf;
 817
 818                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 819
 820                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 821
 822                 if (pixbuf) {
 823                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 824                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 825                         g_object_unref (scaled_pixbuf);
 826                         g_object_unref (pixbuf);
 827                 } else {
 828                         gtk_image_set_from_stock (GTK_IMAGE (image),
 829                                                   "gtk-dialog-question",
 830                                                   GTK_ICON_SIZE_DIALOG);
 831                 }
 832         }
 833
 834         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 835 }
 836
 837 static void
 838 avatar_chooser_response_cb (GtkWidget            *widget,
 839                             gint                  response,
 840                             EmpathyAvatarChooser *chooser)
 841 {
 842         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 843
 844         if (response == GTK_RESPONSE_CANCEL) {
 845                 goto out;
 846         }
 847
 848         /* Check if we went non-ready since displaying the dialog. */
 849         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 850                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 851                 goto out;
 852         }
 853
 854         if (response == GTK_RESPONSE_OK) {
 855                 gchar *filename;
 856                 gchar *path;
 857
 858                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 859                 avatar_chooser_set_image_from_file (chooser, filename);
 860                 g_free (filename);
 861
 862                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 863                 if (path) {
 864                         empathy_conf_set_string (empathy_conf_get (),
 865                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 866                                                  path);
 867                         g_free (path);
 868                 }
 869         }
 870         else if (response == GTK_RESPONSE_NO) {
 871                 /* This corresponds to "No Image", not to "Cancel" */
 872                 avatar_chooser_clear_image (chooser);
 873         }
 874
 875 out:
 876         gtk_widget_destroy (widget);
 877 }
 878
 879 static void
 880 avatar_chooser_clicked_cb (GtkWidget            *button,
 881                            EmpathyAvatarChooser *chooser)
 882 {
 883         GtkFileChooser *chooser_dialog;
 884         GtkWidget      *image;
 885         gchar          *saved_dir = NULL;
 886         const gchar    *default_dir = DEFAULT_DIR;
 887         const gchar    *pics_dir;
 888         GtkFileFilter  *filter;
 889
 890         chooser_dialog = GTK_FILE_CHOOSER (
 891                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 892                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 893                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 894                                              _("No Image"),
 895                                              GTK_RESPONSE_NO,
 896                                              GTK_STOCK_CANCEL,
 897                                              GTK_RESPONSE_CANCEL,
 898                                              GTK_STOCK_OPEN,
 899                                              GTK_RESPONSE_OK,
 900                                              NULL));
 901
 902         /* Get special dirs */
 903         empathy_conf_get_string (empathy_conf_get (),
 904                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 905                                  &saved_dir);
 906         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 907                 g_free (saved_dir);
 908                 saved_dir = NULL;
 909         }
 910         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 911                 default_dir = NULL;
 912         }
 913         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 914         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 915                 pics_dir = NULL;
 916         }
 917
 918         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 919         if (saved_dir) {
 920                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 921         }
 922         else if (pics_dir) {
 923                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 924         }
 925         else if (default_dir) {
 926                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 927         } else {
 928                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 929         }
 930
 931         /* Add shortcuts to special dirs */
 932         if (saved_dir) {
 933                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 934         }
 935         else if (pics_dir) {
 936                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 937         }
 938         if (default_dir) {
 939                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 940         }
 941
 942         /* Setup preview image */
 943         image = gtk_image_new ();
 944         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 945         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 946         gtk_widget_show (image);
 947         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 948         g_signal_connect (chooser_dialog, "update-preview",
 949                           G_CALLBACK (avatar_chooser_update_preview_cb),
 950                           chooser);
 951
 952         /* Setup filers */
 953         filter = gtk_file_filter_new ();
 954         gtk_file_filter_set_name (filter, _("Images"));
 955         gtk_file_filter_add_pixbuf_formats (filter);
 956         gtk_file_chooser_add_filter (chooser_dialog, filter);
 957         filter = gtk_file_filter_new ();
 958         gtk_file_filter_set_name (filter, _("All Files"));
 959         gtk_file_filter_add_pattern(filter, "*");
 960         gtk_file_chooser_add_filter (chooser_dialog, filter);
 961
 962         /* Setup response */
 963         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 964         g_signal_connect (chooser_dialog, "response",
 965                           G_CALLBACK (avatar_chooser_response_cb),
 966                           chooser);
 967
 968         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 969         g_free (saved_dir);
 970 }
 971
 972 GtkWidget *
 973 empathy_avatar_chooser_new ()
 974 {
 975         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 976 }
 977
 978 void
 979 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 980                             EmpathyAvatar        *avatar)
 981 {
 982         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 983
 984         if (avatar != NULL) {
 985                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
 986         } else {
 987                 avatar_chooser_clear_image (chooser);
 988         }
 989 }
 990
 991 void
 992 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 993                                        const gchar          **data,
 994                                        gsize                 *data_size,
 995                                        const gchar          **mime_type)
 996 {
 997         EmpathyAvatarChooserPriv *priv;
 998
 999         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1000
1001         priv = GET_PRIV (chooser);
1002
1003         if (priv->avatar != NULL) {
1004                 if (data != NULL) {
1005                         *data = priv->avatar->data;
1006                 }
1007                 if (data_size != NULL) {
1008                         *data_size = priv->avatar->len;
1009                 }
1010                 if (mime_type != NULL) {
1011                         *mime_type = priv->avatar->format;
1012                 }
1013         } else {
1014                 if (data != NULL) {
1015                         *data = NULL;
1016                 }
1017                 if (data_size != NULL) {
1018                         *data_size = 0;
1019                 }
1020                 if (mime_type != NULL) {
1021                         *mime_type = NULL;
1022                 }
1023         }
1024 }
1025