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., 51 Franklin St, Fifth Floor,
  18  * Boston, MA  02110-1301  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-gsettings.h>
  33 #include <libempathy/empathy-utils.h>
  34
  35 #include "empathy-avatar-chooser.h"
  36 #include "empathy-images.h"
  37 #include "empathy-ui-utils.h"
  38
  39 #ifdef HAVE_CHEESE
  40 #include <cheese-avatar-chooser.h>
  41 #endif /* HAVE_CHEESE */
  42
  43
  44 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  45 #include <libempathy/empathy-debug.h>
  46
  47 /**
  48  * SECTION:empathy-avatar-chooser
  49  * @title: EmpathyAvatarChooser
  50  * @short_description: A widget used to change avatar
  51  * @include: libempathy-gtk/empathy-avatar-chooser.h
  52  *
  53  * #EmpathyAvatarChooser is a widget which extends #GtkButton to
  54  * provide a way of changing avatar.
  55  */
  56
  57 /**
  58  * EmpathyAvatarChooser:
  59  * @parent: parent object
  60  *
  61  * Widget which extends #GtkButton to provide a way of changing avatar.
  62  */
  63
  64 #define AVATAR_SIZE_SAVE 96
  65 #define AVATAR_SIZE_VIEW 64
  66 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  67
  68 #ifdef HAVE_CHEESE
  69 /*
  70  * A custom GtkResponseType used when the user presses the
  71  * "Camera Picture" button. Any positive value would be sufficient.
  72  */
  73 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM   10
  74 #endif
  75 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE GTK_RESPONSE_NO
  76 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_CANCEL   GTK_RESPONSE_CANCEL
  77 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE     GTK_RESPONSE_OK
  78
  79 struct _EmpathyAvatarChooserPrivate {
  80         TpConnection            *connection;
  81         GtkFileChooser          *chooser_dialog;
  82
  83         gulong ready_handler_id;
  84
  85         EmpathyAvatar *avatar;
  86         GSettings *gsettings_ui;
  87 };
  88
  89 static void       avatar_chooser_finalize              (GObject              *object);
  90 static void       avatar_chooser_set_connection        (EmpathyAvatarChooser *self,
  91                                                         TpConnection         *connection);
  92 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *self,
  93                                                         EmpathyAvatar        *avatar,
  94                                                         GdkPixbuf            *pixbuf,
  95                                                         gboolean              set_locally);
  96 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  97                                                         GdkDragContext       *context,
  98                                                         gint                  x,
  99                                                         gint                  y,
 100                                                         guint                 time,
 101                                                         EmpathyAvatarChooser *self);
 102 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
 103                                                         GdkDragContext       *context,
 104                                                         guint                 time,
 105                                                         EmpathyAvatarChooser *self);
 106 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
 107                                                         GdkDragContext       *context,
 108                                                         gint                  x,
 109                                                         gint                  y,
 110                                                         guint                 time,
 111                                                         EmpathyAvatarChooser *self);
 112 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
 113                                                         GdkDragContext       *context,
 114                                                         gint                  x,
 115                                                         gint                  y,
 116                                                         GtkSelectionData     *selection_data,
 117                                                         guint                 info,
 118                                                         guint                 time,
 119                                                         EmpathyAvatarChooser *self);
 120 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
 121                                                         EmpathyAvatarChooser *self);
 122
 123 enum {
 124         CHANGED,
 125         LAST_SIGNAL
 126 };
 127
 128 enum {
 129         PROP_0,
 130         PROP_CONNECTION
 131 };
 132
 133 static guint signals [LAST_SIGNAL];
 134
 135 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 136
 137 /*
 138  * Drag and drop stuff
 139  */
 140 #define URI_LIST_TYPE "text/uri-list"
 141
 142 enum DndTargetType {
 143         DND_TARGET_TYPE_URI_LIST
 144 };
 145
 146 static const GtkTargetEntry drop_types[] = {
 147         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 148 };
 149
 150 static void
 151 avatar_chooser_get_property (GObject    *object,
 152                              guint       param_id,
 153                              GValue     *value,
 154                              GParamSpec *pspec)
 155 {
 156         EmpathyAvatarChooser *self = (EmpathyAvatarChooser *) object;
 157
 158         switch (param_id) {
 159         case PROP_CONNECTION:
 160                 g_value_set_object (value, self->priv->connection);
 161                 break;
 162         default:
 163                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 164                 break;
 165         }
 166 }
 167
 168 static void
 169 avatar_chooser_set_property (GObject      *object,
 170                              guint         param_id,
 171                              const GValue *value,
 172                              GParamSpec   *pspec)
 173 {
 174         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 175
 176         switch (param_id) {
 177         case PROP_CONNECTION:
 178                 avatar_chooser_set_connection (self, g_value_get_object (value));
 179                 break;
 180         default:
 181                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 182                 break;
 183         }
 184 }
 185
 186 static void
 187 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 188 {
 189         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 190         GParamSpec *param_spec;
 191
 192         object_class->finalize = avatar_chooser_finalize;
 193         object_class->get_property = avatar_chooser_get_property;
 194         object_class->set_property = avatar_chooser_set_property;
 195
 196         /**
 197          * EmpathyAvatarChooser::changed:
 198          * @self: an #EmpathyAvatarChooser
 199          *
 200          * Emitted when the chosen avatar has changed.
 201          *
 202          */
 203         signals[CHANGED] =
 204                 g_signal_new ("changed",
 205                               G_TYPE_FROM_CLASS (klass),
 206                               G_SIGNAL_RUN_LAST,
 207                               0,
 208                               NULL, NULL,
 209                               g_cclosure_marshal_VOID__VOID,
 210                               G_TYPE_NONE, 0);
 211
 212         /**
 213          * EmpathyAvatarChooser:connection:
 214          *
 215          * The #TpConnection whose avatar should be shown and modified by
 216          * the #EmpathyAvatarChooser instance.
 217          */
 218         param_spec = g_param_spec_object ("connection",
 219                                           "TpConnection",
 220                                           "TpConnection whose avatar should be "
 221                                           "shown and modified by this widget",
 222                                           TP_TYPE_CONNECTION,
 223                                           G_PARAM_READWRITE |
 224                                           G_PARAM_STATIC_STRINGS);
 225         g_object_class_install_property (object_class,
 226                                          PROP_CONNECTION,
 227                                          param_spec);
 228
 229         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPrivate));
 230 }
 231
 232 static void
 233 empathy_avatar_chooser_init (EmpathyAvatarChooser *self)
 234 {
 235         self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
 236                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPrivate);
 237
 238         gtk_drag_dest_set (GTK_WIDGET (self),
 239                            GTK_DEST_DEFAULT_ALL,
 240                            drop_types,
 241                            G_N_ELEMENTS (drop_types),
 242                            GDK_ACTION_COPY);
 243
 244         self->priv->gsettings_ui = g_settings_new (EMPATHY_PREFS_UI_SCHEMA);
 245
 246         g_signal_connect (self, "drag-motion",
 247                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 248                           self);
 249         g_signal_connect (self, "drag-leave",
 250                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 251                           self);
 252         g_signal_connect (self, "drag-drop",
 253                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 254                           self);
 255         g_signal_connect (self, "drag-data-received",
 256                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 257                           self);
 258         g_signal_connect (self, "clicked",
 259                           G_CALLBACK (avatar_chooser_clicked_cb),
 260                           self);
 261
 262         empathy_avatar_chooser_set (self, NULL);
 263 }
 264
 265 static void
 266 avatar_chooser_finalize (GObject *object)
 267 {
 268         EmpathyAvatarChooser *self = (EmpathyAvatarChooser *) object;
 269
 270         avatar_chooser_set_connection (EMPATHY_AVATAR_CHOOSER (object), NULL);
 271         g_assert (self->priv->connection == NULL);
 272
 273         tp_clear_pointer (&self->priv->avatar, empathy_avatar_unref);
 274
 275         tp_clear_object (&self->priv->gsettings_ui);
 276
 277         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 278 }
 279
 280 static void
 281 avatar_chooser_set_connection (EmpathyAvatarChooser *self,
 282                                TpConnection         *connection)
 283 {
 284         tp_clear_object (&self->priv->connection);
 285
 286         if (connection != NULL) {
 287                 GQuark features[] = { TP_CONNECTION_FEATURE_AVATAR_REQUIREMENTS, 0 };
 288                 self->priv->connection = g_object_ref (connection);
 289                 tp_proxy_prepare_async (self->priv->connection, features, NULL, NULL);
 290         }
 291 }
 292
 293 static void
 294 avatar_chooser_error_show (EmpathyAvatarChooser *self,
 295                            const gchar          *primary_text,
 296                            const gchar          *secondary_text)
 297 {
 298         GtkWidget *parent;
 299         GtkWidget *dialog;
 300
 301         parent = gtk_widget_get_toplevel (GTK_WIDGET (self));
 302         if (!GTK_IS_WINDOW (parent)) {
 303                 parent = NULL;
 304         }
 305
 306         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 307                                          GTK_DIALOG_MODAL,
 308                                          GTK_MESSAGE_WARNING,
 309                                          GTK_BUTTONS_CLOSE,
 310                                          "%s", primary_text);
 311
 312         if (secondary_text != NULL) {
 313                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 314                                                           "%s", secondary_text);
 315         }
 316
 317         g_signal_connect (dialog, "response",
 318                           G_CALLBACK (gtk_widget_destroy), NULL);
 319         gtk_widget_show (dialog);
 320
 321 }
 322
 323 static gboolean
 324 str_in_strv (const gchar  *str,
 325              gchar **strv)
 326 {
 327         if (strv == NULL) {
 328                 return FALSE;
 329         }
 330
 331         while (*strv != NULL) {
 332                 if (g_str_equal (str, *strv)) {
 333                         return TRUE;
 334                 }
 335                 strv++;
 336         }
 337         return FALSE;
 338 }
 339
 340 /* The caller must free the strings stored in satisfactory_format_name and
 341  * satisfactory_mime_type.
 342  */
 343 static gboolean
 344 avatar_chooser_need_mime_type_conversion (const gchar *current_mime_type,
 345                                           gchar      **accepted_mime_types,
 346                                           gchar      **satisfactory_format_name,
 347                                           gchar      **satisfactory_mime_type)
 348 {
 349         gchar   *good_mime_types[] = {"image/jpeg", "image/png", NULL};
 350         guint    i;
 351         GSList  *formats, *l;
 352         gboolean found = FALSE;
 353
 354         *satisfactory_format_name = NULL;
 355         *satisfactory_mime_type = NULL;
 356
 357         /* If there is no accepted format there is nothing we can do */
 358         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 359                 return TRUE;
 360         }
 361
 362         /* If the current mime type is good and accepted, don't change it!
 363          * jpeg is compress better pictures, but png is better for logos and
 364          * could have an alpha layer. */
 365         if (str_in_strv (current_mime_type, good_mime_types) &&
 366             str_in_strv (current_mime_type, accepted_mime_types)) {
 367                 *satisfactory_mime_type = g_strdup (current_mime_type);
 368                 *satisfactory_format_name = g_strdup (current_mime_type +
 369                                                       strlen ("image/"));
 370                 return FALSE;
 371         }
 372
 373         /* The current mime type is either not accepted or not good to use.
 374          * Check if one of the good format is supported... */
 375         for (i = 0; good_mime_types[i] != NULL;  i++) {
 376                 if (str_in_strv (good_mime_types[i], accepted_mime_types)) {
 377                         *satisfactory_mime_type = g_strdup (good_mime_types[i]);
 378                         *satisfactory_format_name = g_strdup (good_mime_types[i] +
 379                                                               strlen ("image/"));
 380                         return TRUE;
 381                 }
 382         }
 383
 384         /* Pick the first supported format we can write */
 385         formats = gdk_pixbuf_get_formats ();
 386         for (l = formats; !found && l != NULL; l = l->next) {
 387                 GdkPixbufFormat *format = l->data;
 388                 gchar **format_mime_types;
 389                 gchar **iter;
 390
 391                 if (!gdk_pixbuf_format_is_writable (format)) {
 392                         continue;
 393                 }
 394
 395                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 396                 for (iter = format_mime_types; *iter != NULL; iter++) {
 397                         if (str_in_strv (*iter, accepted_mime_types)) {
 398                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 399                                 *satisfactory_mime_type = g_strdup (*iter);
 400                                 found = TRUE;
 401                                 break;
 402                         }
 403                 }
 404                 g_strfreev (format_mime_types);
 405         }
 406         g_slist_free (formats);
 407
 408         return TRUE;
 409 }
 410
 411 static EmpathyAvatar *
 412 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *self,
 413                                         GdkPixbuf            *pixbuf,
 414                                         EmpathyAvatar        *avatar)
 415 {
 416         TpAvatarRequirements     *req;
 417         gboolean                  needs_conversion = FALSE;
 418         guint                     width, height;
 419         gchar                    *new_format_name = NULL;
 420         gchar                    *new_mime_type = NULL;
 421         gdouble                   min_factor, max_factor;
 422         gdouble                   factor;
 423         gchar                    *best_image_data = NULL;
 424         gsize                     best_image_size = 0;
 425         guint                     count = 0;
 426
 427         req = tp_connection_get_avatar_requirements (self->priv->connection);
 428         if (req == NULL) {
 429                 DEBUG ("Avatar requirements not ready");
 430                 return NULL;
 431         }
 432
 433         /* Smaller is the factor, smaller will be the image.
 434          * 0 is an empty image, 1 is the full size. */
 435         min_factor = 0;
 436         max_factor = 1;
 437         factor = 1;
 438
 439         /* Check if we need to convert to another image format */
 440         if (avatar_chooser_need_mime_type_conversion (avatar->format,
 441                                                       req->supported_mime_types,
 442                                                       &new_format_name,
 443                                                       &new_mime_type)) {
 444                 DEBUG ("Format conversion needed, we'll use mime type '%s' "
 445                        "and format name '%s'. Current mime type is '%s'",
 446                        new_mime_type, new_format_name, avatar->format);
 447                 needs_conversion = TRUE;
 448         }
 449
 450         /* If there is no format we can use, report error to the user. */
 451         if (new_mime_type == NULL || new_format_name == NULL) {
 452                 avatar_chooser_error_show (self, _("Couldn't convert image"),
 453                                 _("None of the accepted image formats are "
 454                                   "supported on your system"));
 455                 return NULL;
 456         }
 457
 458         /* If width or height are too big, it needs converting. */
 459         width = gdk_pixbuf_get_width (pixbuf);
 460         height = gdk_pixbuf_get_height (pixbuf);
 461         if ((req->maximum_width > 0 && width > req->maximum_width) ||
 462             (req->maximum_height > 0 && height > req->maximum_height)) {
 463                 gdouble h_factor, v_factor;
 464
 465                 h_factor = (gdouble) req->maximum_width / width;
 466                 v_factor = (gdouble) req->maximum_height / height;
 467                 factor = max_factor = MIN (h_factor, v_factor);
 468
 469                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 470                        width, height, req->maximum_width, req->maximum_height);
 471
 472                 needs_conversion = TRUE;
 473         }
 474
 475         /* If the data len is too big and no other conversion is needed,
 476          * try with a lower factor. */
 477         if (req->maximum_bytes > 0 && avatar->len > req->maximum_bytes && !needs_conversion) {
 478                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 479                        "(max is %u bytes), conversion needed.",
 480                        avatar->len, req->maximum_bytes);
 481
 482                 factor = 0.5;
 483                 needs_conversion = TRUE;
 484         }
 485
 486         /* If no conversion is needed, return the avatar */
 487         if (!needs_conversion) {
 488                 g_free (new_format_name);
 489                 g_free (new_mime_type);
 490                 return empathy_avatar_ref (avatar);
 491         }
 492
 493         do {
 494                 GdkPixbuf *pixbuf_scaled = NULL;
 495                 gboolean   saved;
 496                 gint       new_width, new_height;
 497                 gchar     *converted_image_data;
 498                 gsize      converted_image_size;
 499                 GError    *error = NULL;
 500
 501                 if (factor != 1) {
 502                         new_width = width * factor;
 503                         new_height = height * factor;
 504                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 505                                                                  new_width,
 506                                                                  new_height,
 507                                                                  GDK_INTERP_HYPER);
 508                 } else {
 509                         new_width = width;
 510                         new_height = height;
 511                         pixbuf_scaled = g_object_ref (pixbuf);
 512                 }
 513
 514                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 515                         new_width, new_height, new_format_name);
 516
 517                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 518                                                    &converted_image_data,
 519                                                    &converted_image_size,
 520                                                    new_format_name,
 521                                                    &error, NULL);
 522                 g_object_unref (pixbuf_scaled);
 523
 524                 if (!saved) {
 525                         g_free (new_format_name);
 526                         g_free (new_mime_type);
 527                         avatar_chooser_error_show (self,
 528                                 _("Couldn't convert image"),
 529                                 error ? error->message : NULL);
 530                         g_clear_error (&error);
 531                         return NULL;
 532                 }
 533
 534                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 535                         converted_image_size);
 536
 537                 /* If the new image satisfy the req, keep it as current best */
 538                 if (req->maximum_bytes == 0 ||
 539                     converted_image_size <= req->maximum_bytes) {
 540                         if (best_image_data)
 541                                 g_free (best_image_data);
 542
 543                         best_image_data = converted_image_data;
 544                         best_image_size = converted_image_size;
 545
 546                         /* If this image is close enough to the optimal size,
 547                          * stop searching */
 548                         if (req->maximum_bytes == 0 ||
 549                             req->maximum_bytes - converted_image_size <= 1024)
 550                                 break;
 551                 } else {
 552                         g_free (converted_image_data);
 553                 }
 554
 555                 /* Make a binary search for the bigest factor that produce
 556                  * an image data size less than max_size */
 557                 if (converted_image_size > req->maximum_bytes)
 558                         max_factor = factor;
 559                 if (converted_image_size < req->maximum_bytes)
 560                         min_factor = factor;
 561                 factor = (min_factor + max_factor)/2;
 562
 563                 if ((int) (width * factor) == new_width ||
 564                     (int) (height * factor) == new_height) {
 565                         /* min_factor and max_factor are too close, so the new
 566                          * factor will produce the same image as previous
 567                          * iteration. No need to continue, we already found
 568                          * the optimal size. */
 569                         break;
 570                 }
 571
 572                 /* Do 10 iterations in the worst case */
 573         } while (++count < 10);
 574
 575         g_free (new_format_name);
 576
 577         /* Takes ownership of new_mime_type and best_image_data */
 578         avatar = empathy_avatar_new ((guchar *) best_image_data,
 579                 best_image_size, new_mime_type, NULL);
 580
 581         return avatar;
 582 }
 583
 584 static void
 585 avatar_chooser_clear_image (EmpathyAvatarChooser *self)
 586 {
 587         GtkWidget *image;
 588
 589         tp_clear_pointer (&self->priv->avatar, empathy_avatar_unref);
 590
 591         image = gtk_image_new_from_icon_name (EMPATHY_IMAGE_AVATAR_DEFAULT,
 592                 GTK_ICON_SIZE_DIALOG);
 593         gtk_button_set_image (GTK_BUTTON (self), image);
 594         g_signal_emit (self, signals[CHANGED], 0);
 595 }
 596
 597 static void
 598 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *self,
 599                                     gchar                *data,
 600                                     gsize                 size,
 601                                     gboolean              set_locally)
 602 {
 603         GdkPixbuf     *pixbuf;
 604         EmpathyAvatar *avatar = NULL;
 605         gchar         *mime_type = NULL;
 606
 607         if (data == NULL) {
 608                 avatar_chooser_clear_image (self);
 609                 return;
 610         }
 611
 612         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 613         if (pixbuf == NULL) {
 614                 g_free (data);
 615                 data = NULL;
 616                 return;
 617         }
 618
 619         /* avatar takes ownership of data and mime_type */
 620         avatar = empathy_avatar_new ((guchar *) data, size, mime_type, NULL);
 621
 622         avatar_chooser_set_image (self, avatar, pixbuf, set_locally);
 623 }
 624
 625 static void
 626 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *self,
 627                                       EmpathyAvatar        *avatar,
 628                                       gboolean              set_locally)
 629 {
 630         GdkPixbuf *pixbuf;
 631         gchar     *mime_type = NULL;
 632
 633         g_assert (avatar != NULL);
 634
 635         pixbuf = empathy_pixbuf_from_data_and_mime ((gchar *) avatar->data,
 636                                                     avatar->len,
 637                                                     &mime_type);
 638         if (pixbuf == NULL) {
 639                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 640                 return;
 641         }
 642
 643         if (avatar->format == NULL) {
 644                 avatar->format = mime_type;
 645         } else {
 646                 if (strcmp (mime_type, avatar->format)) {
 647                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 648                                 avatar->format, mime_type);
 649                 }
 650                 g_free (mime_type);
 651         }
 652
 653         empathy_avatar_ref (avatar);
 654
 655         avatar_chooser_set_image (self, avatar, pixbuf, set_locally);
 656 }
 657
 658 static void
 659 avatar_chooser_set_image (EmpathyAvatarChooser *self,
 660                           EmpathyAvatar        *avatar,
 661                           GdkPixbuf            *pixbuf,
 662                           gboolean              set_locally)
 663 {
 664         GdkPixbuf                *pixbuf_view;
 665         GtkWidget                *image;
 666
 667         g_assert (avatar != NULL);
 668         g_assert (pixbuf != NULL);
 669
 670         if (set_locally) {
 671                 EmpathyAvatar *conv;
 672
 673                 conv = avatar_chooser_maybe_convert_and_scale (self,
 674                         pixbuf, avatar);
 675                 empathy_avatar_unref (avatar);
 676
 677                 if (conv == NULL) {
 678                         /* An error occured; don't change the avatar. */
 679                         return;
 680                 }
 681
 682                 avatar = conv;
 683         }
 684
 685         tp_clear_pointer (&self->priv->avatar, empathy_avatar_unref);
 686         self->priv->avatar = avatar;
 687
 688         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 689         image = gtk_image_new_from_pixbuf (pixbuf_view);
 690
 691         gtk_button_set_image (GTK_BUTTON (self), image);
 692         g_signal_emit (self, signals[CHANGED], 0);
 693
 694         g_object_unref (pixbuf_view);
 695         g_object_unref (pixbuf);
 696 }
 697
 698 static void
 699 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *self,
 700                                     const gchar          *filename)
 701 {
 702         gchar  *image_data = NULL;
 703         gsize   image_size = 0;
 704         GError *error = NULL;
 705
 706         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 707                 DEBUG ("Failed to load image from '%s': %s", filename,
 708                         error ? error->message : "No error given");
 709
 710                 g_clear_error (&error);
 711                 return;
 712         }
 713
 714         avatar_chooser_set_image_from_data (self, image_data, image_size, TRUE);
 715 }
 716
 717 #ifdef HAVE_CHEESE
 718 static void
 719 avatar_chooser_set_avatar_from_pixbuf (EmpathyAvatarChooser *self,
 720                                        GdkPixbuf            *pb)
 721 {
 722         /* dup the string as empathy_avatar_new steals ownership of the it */
 723         gchar         *mime = g_strdup ("image/png");
 724         gsize          size;
 725         gchar         *buf;
 726         EmpathyAvatar *avatar = NULL;
 727         GError        *error = NULL;
 728         if (!gdk_pixbuf_save_to_buffer (pb, &buf, &size, "png", &error, NULL)) {
 729                 avatar_chooser_error_show (self,
 730                         _("Couldn't save pixbuf to png"),
 731                         error ? error->message : NULL);
 732                 g_clear_error (&error);
 733                 return;
 734         }
 735         avatar = empathy_avatar_new ((guchar *) buf, size, mime, NULL);
 736         avatar_chooser_set_image (self, avatar, pb, TRUE);
 737 }
 738 #endif
 739
 740 static gboolean
 741 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 742                               GdkDragContext     *context,
 743                               gint                x,
 744                               gint                y,
 745                               guint               time_,
 746                               EmpathyAvatarChooser *self)
 747 {
 748         GList                  *p;
 749
 750         for (p = gdk_drag_context_list_targets (context); p != NULL;
 751              p = p->next) {
 752                 gchar *possible_type;
 753
 754                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 755
 756                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 757                         g_free (possible_type);
 758                         gdk_drag_status (context, GDK_ACTION_COPY, time_);
 759
 760                         return TRUE;
 761                 }
 762
 763                 g_free (possible_type);
 764         }
 765
 766         return FALSE;
 767 }
 768
 769 static void
 770 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 771                              GdkDragContext     *context,
 772                              guint               time_,
 773                              EmpathyAvatarChooser *self)
 774 {
 775 }
 776
 777 static gboolean
 778 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 779                             GdkDragContext     *context,
 780                             gint                x,
 781                             gint                y,
 782                             guint               time_,
 783                             EmpathyAvatarChooser *self)
 784 {
 785         GList                  *p;
 786
 787         if (gdk_drag_context_list_targets (context) == NULL) {
 788                 return FALSE;
 789         }
 790
 791         for (p = gdk_drag_context_list_targets (context);
 792              p != NULL; p = p->next) {
 793                 char *possible_type;
 794
 795                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 796                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 797                         g_free (possible_type);
 798                         gtk_drag_get_data (widget, context,
 799                                            GDK_POINTER_TO_ATOM (p->data),
 800                                            time_);
 801
 802                         return TRUE;
 803                 }
 804
 805                 g_free (possible_type);
 806         }
 807
 808         return FALSE;
 809 }
 810
 811 static void
 812 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 813                                      GdkDragContext     *context,
 814                                      gint                x,
 815                                      gint                y,
 816                                      GtkSelectionData   *selection_data,
 817                                      guint               info,
 818                                      guint               time_,
 819                                      EmpathyAvatarChooser *self)
 820 {
 821         gchar    *target_type;
 822         gboolean  handled = FALSE;
 823
 824         target_type = gdk_atom_name (gtk_selection_data_get_target (selection_data));
 825         if (!strcmp (target_type, URI_LIST_TYPE)) {
 826                 GFile            *file;
 827                 gchar            *nl;
 828                 gchar            *data = NULL;
 829                 gsize             bytes_read;
 830
 831                 nl = strstr ((gchar *) gtk_selection_data_get_data (selection_data),
 832                                                 "\r\n");
 833                 if (nl) {
 834                         gchar *uri;
 835
 836                         uri = g_strndup ((gchar *) gtk_selection_data_get_data (selection_data),
 837                                          nl - (gchar *) gtk_selection_data_get_data (selection_data));
 838
 839                         file = g_file_new_for_uri (uri);
 840                         g_free (uri);
 841                 } else {
 842                         file = g_file_new_for_uri ((gchar *) gtk_selection_data_get_data (
 843                                                 selection_data));
 844                 }
 845
 846                 handled = g_file_load_contents (file, NULL, &data, &bytes_read,
 847                                                 NULL, NULL);
 848
 849                 if (handled) {
 850                         /* this in turn calls empathy_avatar_new (), which assumes
 851                          * ownership of data.
 852                          */
 853                         avatar_chooser_set_image_from_data (self, data,
 854                                                             bytes_read,
 855                                                             TRUE);
 856                 }
 857
 858                 g_object_unref (file);
 859         }
 860
 861         gtk_drag_finish (context, handled, FALSE, time_);
 862 }
 863
 864 static void
 865 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 866                                   EmpathyAvatarChooser *self)
 867 {
 868         gchar *filename;
 869
 870         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 871
 872         if (filename) {
 873                 GtkWidget *image;
 874                 GdkPixbuf *pixbuf = NULL;
 875                 GdkPixbuf *scaled_pixbuf;
 876
 877                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 878
 879                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 880
 881                 if (pixbuf) {
 882                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 883                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 884                         g_object_unref (scaled_pixbuf);
 885                         g_object_unref (pixbuf);
 886                 } else {
 887                         gtk_image_set_from_stock (GTK_IMAGE (image),
 888                                                   "gtk-dialog-question",
 889                                                   GTK_ICON_SIZE_DIALOG);
 890                 }
 891
 892                 g_free (filename);
 893         }
 894
 895         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 896 }
 897
 898 #ifdef HAVE_CHEESE
 899 static gboolean
 900 destroy_chooser (GtkWidget *self)
 901 {
 902         gtk_widget_destroy (self);
 903         return FALSE;
 904 }
 905
 906 static void
 907 webcam_response_cb (GtkDialog            *dialog,
 908                     int                   response,
 909                     EmpathyAvatarChooser *self)
 910 {
 911         if (response == GTK_RESPONSE_ACCEPT) {
 912                 GdkPixbuf           *pb;
 913                 CheeseAvatarChooser *cheese_chooser;
 914
 915                 cheese_chooser = CHEESE_AVATAR_CHOOSER (dialog);
 916                 pb = cheese_avatar_chooser_get_picture (cheese_chooser);
 917                 avatar_chooser_set_avatar_from_pixbuf (self, pb);
 918         }
 919         if (response != GTK_RESPONSE_DELETE_EVENT &&
 920             response != GTK_RESPONSE_NONE)
 921                 g_idle_add ((GSourceFunc) destroy_chooser, dialog);
 922 }
 923
 924 static void
 925 choose_avatar_from_webcam (GtkWidget            *widget,
 926                            EmpathyAvatarChooser *self)
 927 {
 928         GtkWidget *window;
 929
 930         window = cheese_avatar_chooser_new ();
 931
 932         gtk_window_set_transient_for (GTK_WINDOW (window),
 933                                       GTK_WINDOW (empathy_get_toplevel_window (GTK_WIDGET (self))));
 934         gtk_window_set_modal (GTK_WINDOW (window), TRUE);
 935         g_signal_connect (G_OBJECT (window), "response",
 936                           G_CALLBACK (webcam_response_cb), self);
 937         gtk_widget_show (window);
 938 }
 939 #endif /* HAVE_CHEESE */
 940
 941 static void
 942 avatar_chooser_response_cb (GtkWidget            *widget,
 943                             gint                  response,
 944                             EmpathyAvatarChooser *self)
 945 {
 946         self->priv->chooser_dialog = NULL;
 947
 948         if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE) {
 949                 gchar *filename;
 950                 gchar *path;
 951
 952                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 953                 avatar_chooser_set_image_from_file (self, filename);
 954                 g_free (filename);
 955
 956                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 957                 if (path) {
 958                         g_settings_set_string (self->priv->gsettings_ui,
 959                                                EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 960                                                path);
 961
 962                         g_free (path);
 963                 }
 964         }
 965         else if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE) {
 966                 /* This corresponds to "No Image", not to "Cancel" */
 967                 avatar_chooser_clear_image (self);
 968         }
 969         #ifdef HAVE_CHEESE
 970         else if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM) {
 971                 /* This corresponds to "Camera Picture" */
 972                 choose_avatar_from_webcam (widget, self);
 973         }
 974         #endif
 975         gtk_widget_destroy (widget);
 976 }
 977
 978 static void
 979 avatar_chooser_clicked_cb (GtkWidget            *button,
 980                            EmpathyAvatarChooser *self)
 981 {
 982         GtkFileChooser *chooser_dialog;
 983         GtkWidget      *image;
 984         gchar          *saved_dir = NULL;
 985         const gchar    *default_dir = DEFAULT_DIR;
 986         const gchar    *pics_dir;
 987         GtkFileFilter  *filter;
 988
 989         if (self->priv->chooser_dialog) {
 990                 gtk_window_present (GTK_WINDOW (self->priv->chooser_dialog));
 991                 return;
 992         }
 993
 994         self->priv->chooser_dialog = GTK_FILE_CHOOSER (
 995                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 996                                              empathy_get_toplevel_window (GTK_WIDGET (self)),
 997                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 998                                              #ifdef HAVE_CHEESE
 999                                              _("Take a picture..."),
1000                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM,
1001                                              #endif
1002                                              _("No Image"),
1003                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE,
1004                                              GTK_STOCK_CANCEL,
1005                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_CANCEL,
1006                                              GTK_STOCK_OPEN,
1007                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE,
1008                                              NULL));
1009         chooser_dialog = self->priv->chooser_dialog;
1010         gtk_window_set_destroy_with_parent (GTK_WINDOW (chooser_dialog), TRUE);
1011
1012         /* Get special dirs */
1013         saved_dir = g_settings_get_string (self->priv->gsettings_ui,
1014                                            EMPATHY_PREFS_UI_AVATAR_DIRECTORY);
1015
1016         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
1017                 g_free (saved_dir);
1018                 saved_dir = NULL;
1019         }
1020         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
1021                 default_dir = NULL;
1022         }
1023         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
1024         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
1025                 pics_dir = NULL;
1026         }
1027
1028         /* Set current dir to the last one or to DEFAULT_DIR or to home */
1029         if (saved_dir) {
1030                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
1031         }
1032         else if (pics_dir) {
1033                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
1034         }
1035         else if (default_dir) {
1036                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
1037         } else {
1038                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
1039         }
1040
1041         /* Add shortcuts to special dirs */
1042         if (saved_dir) {
1043                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
1044         }
1045         else if (pics_dir) {
1046                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
1047         }
1048         if (default_dir) {
1049                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
1050         }
1051
1052         /* Setup preview image */
1053         image = gtk_image_new ();
1054         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
1055         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
1056         gtk_widget_show (image);
1057         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
1058         g_signal_connect (chooser_dialog, "update-preview",
1059                           G_CALLBACK (avatar_chooser_update_preview_cb),
1060                           self);
1061
1062         /* Setup filers */
1063         filter = gtk_file_filter_new ();
1064         gtk_file_filter_set_name (filter, _("Images"));
1065         gtk_file_filter_add_pixbuf_formats (filter);
1066         gtk_file_chooser_add_filter (chooser_dialog, filter);
1067         filter = gtk_file_filter_new ();
1068         gtk_file_filter_set_name (filter, _("All Files"));
1069         gtk_file_filter_add_pattern (filter, "*");
1070         gtk_file_chooser_add_filter (chooser_dialog, filter);
1071
1072         /* Setup response */
1073         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE);
1074         g_signal_connect (chooser_dialog, "response",
1075                           G_CALLBACK (avatar_chooser_response_cb),
1076                           self);
1077
1078         gtk_widget_show (GTK_WIDGET (chooser_dialog));
1079
1080         g_free (saved_dir);
1081 }
1082
1083 /**
1084  * empathy_avatar_chooser_new:
1085  *
1086  * Creates a new #EmpathyAvatarChooser.
1087  *
1088  * Return value: a new #EmpathyAvatarChooser
1089  */
1090 GtkWidget *
1091 empathy_avatar_chooser_new (void)
1092 {
1093         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
1094 }
1095
1096 /**
1097  * empathy_avatar_chooser_set:
1098  * @self: an #EmpathyAvatarChooser
1099  * @avatar: a new #EmpathyAvatar
1100  *
1101  * Sets the @self to display the avatar indicated by @avatar.
1102  */
1103 void
1104 empathy_avatar_chooser_set (EmpathyAvatarChooser *self,
1105                             EmpathyAvatar        *avatar)
1106 {
1107         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (self));
1108
1109         if (avatar != NULL) {
1110                 avatar_chooser_set_image_from_avatar (self, avatar, FALSE);
1111         } else {
1112                 avatar_chooser_clear_image (self);
1113         }
1114 }
1115
1116 /**
1117  * empathy_avatar_chooser_get_image_data:
1118  * @self: an #EmpathyAvatarChooser
1119  * @data: avatar bytes
1120  * @data_size: size of @data
1121  * @mime_type: avatar mime-type
1122  *
1123  * Gets image data about the currently selected avatar.
1124  */
1125 void
1126 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *self,
1127                                        const gchar          **data,
1128                                        gsize                 *data_size,
1129                                        const gchar          **mime_type)
1130 {
1131         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (self));
1132
1133         if (self->priv->avatar != NULL) {
1134                 if (data != NULL) {
1135                         *data = (gchar *) self->priv->avatar->data;
1136                 }
1137                 if (data_size != NULL) {
1138                         *data_size = self->priv->avatar->len;
1139                 }
1140                 if (mime_type != NULL) {
1141                         *mime_type = self->priv->avatar->format;
1142                 }
1143         } else {
1144                 if (data != NULL) {
1145                         *data = NULL;
1146                 }
1147                 if (data_size != NULL) {
1148                         *data_size = 0;
1149                 }
1150                 if (mime_type != NULL) {
1151                         *mime_type = NULL;
1152                 }
1153         }
1154 }
1155
1156 void
1157 empathy_avatar_chooser_set_account (EmpathyAvatarChooser *self,
1158                                        TpAccount *account)
1159 {
1160         g_return_if_fail (account != NULL);
1161
1162         avatar_chooser_set_connection (self, tp_account_get_connection (account));
1163         g_object_notify (G_OBJECT (self), "connection");
1164 }