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
  80 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  81 typedef struct {
  82         TpConnection            *connection;
  83         GtkFileChooser          *chooser_dialog;
  84
  85         gulong ready_handler_id;
  86
  87         EmpathyAvatar *avatar;
  88         GSettings *gsettings_ui;
  89 } EmpathyAvatarChooserPriv;
  90
  91 static void       avatar_chooser_finalize              (GObject              *object);
  92 static void       avatar_chooser_set_connection        (EmpathyAvatarChooser *self,
  93                                                         TpConnection         *connection);
  94 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *chooser,
  95                                                         EmpathyAvatar        *avatar,
  96                                                         GdkPixbuf            *pixbuf,
  97                                                         gboolean              set_locally);
  98 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  99                                                         GdkDragContext       *context,
 100                                                         gint                  x,
 101                                                         gint                  y,
 102                                                         guint                 time,
 103                                                         EmpathyAvatarChooser *chooser);
 104 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
 105                                                         GdkDragContext       *context,
 106                                                         guint                 time,
 107                                                         EmpathyAvatarChooser *chooser);
 108 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
 109                                                         GdkDragContext       *context,
 110                                                         gint                  x,
 111                                                         gint                  y,
 112                                                         guint                 time,
 113                                                         EmpathyAvatarChooser *chooser);
 114 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
 115                                                         GdkDragContext       *context,
 116                                                         gint                  x,
 117                                                         gint                  y,
 118                                                         GtkSelectionData     *selection_data,
 119                                                         guint                 info,
 120                                                         guint                 time,
 121                                                         EmpathyAvatarChooser *chooser);
 122 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
 123                                                         EmpathyAvatarChooser *chooser);
 124
 125 enum {
 126         CHANGED,
 127         LAST_SIGNAL
 128 };
 129
 130 enum {
 131         PROP_0,
 132         PROP_CONNECTION
 133 };
 134
 135 static guint signals [LAST_SIGNAL];
 136
 137 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 138
 139 /*
 140  * Drag and drop stuff
 141  */
 142 #define URI_LIST_TYPE "text/uri-list"
 143
 144 enum DndTargetType {
 145         DND_TARGET_TYPE_URI_LIST
 146 };
 147
 148 static const GtkTargetEntry drop_types[] = {
 149         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 150 };
 151
 152 static void
 153 avatar_chooser_get_property (GObject    *object,
 154                              guint       param_id,
 155                              GValue     *value,
 156                              GParamSpec *pspec)
 157 {
 158         EmpathyAvatarChooserPriv *priv = GET_PRIV (object);
 159
 160         switch (param_id) {
 161         case PROP_CONNECTION:
 162                 g_value_set_object (value, priv->connection);
 163                 break;
 164         default:
 165                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 166                 break;
 167         }
 168 }
 169
 170 static void
 171 avatar_chooser_set_property (GObject      *object,
 172                              guint         param_id,
 173                              const GValue *value,
 174                              GParamSpec   *pspec)
 175 {
 176         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 177
 178         switch (param_id) {
 179         case PROP_CONNECTION:
 180                 avatar_chooser_set_connection (self, g_value_get_object (value));
 181                 break;
 182         default:
 183                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 184                 break;
 185         }
 186 }
 187
 188 static void
 189 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 190 {
 191         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 192         GParamSpec *param_spec;
 193
 194         object_class->finalize = avatar_chooser_finalize;
 195         object_class->get_property = avatar_chooser_get_property;
 196         object_class->set_property = avatar_chooser_set_property;
 197
 198         /**
 199          * EmpathyAvatarChooser::changed:
 200          * @chooser: an #EmpathyAvatarChooser
 201          *
 202          * Emitted when the chosen avatar has changed.
 203          *
 204          */
 205         signals[CHANGED] =
 206                 g_signal_new ("changed",
 207                               G_TYPE_FROM_CLASS (klass),
 208                               G_SIGNAL_RUN_LAST,
 209                               0,
 210                               NULL, NULL,
 211                               g_cclosure_marshal_VOID__VOID,
 212                               G_TYPE_NONE, 0);
 213
 214         /**
 215          * EmpathyAvatarChooser:connection:
 216          *
 217          * The #TpConnection whose avatar should be shown and modified by
 218          * the #EmpathyAvatarChooser instance.
 219          */
 220         param_spec = g_param_spec_object ("connection",
 221                                           "TpConnection",
 222                                           "TpConnection whose avatar should be "
 223                                           "shown and modified by this widget",
 224                                           TP_TYPE_CONNECTION,
 225                                           G_PARAM_READWRITE |
 226                                           G_PARAM_STATIC_STRINGS);
 227         g_object_class_install_property (object_class,
 228                                          PROP_CONNECTION,
 229                                          param_spec);
 230
 231         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 232 }
 233
 234 static void
 235 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 236 {
 237         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 238                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 239
 240         chooser->priv = priv;
 241         gtk_drag_dest_set (GTK_WIDGET (chooser),
 242                            GTK_DEST_DEFAULT_ALL,
 243                            drop_types,
 244                            G_N_ELEMENTS (drop_types),
 245                            GDK_ACTION_COPY);
 246
 247         priv->gsettings_ui = g_settings_new (EMPATHY_PREFS_UI_SCHEMA);
 248
 249         g_signal_connect (chooser, "drag-motion",
 250                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 251                           chooser);
 252         g_signal_connect (chooser, "drag-leave",
 253                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 254                           chooser);
 255         g_signal_connect (chooser, "drag-drop",
 256                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 257                           chooser);
 258         g_signal_connect (chooser, "drag-data-received",
 259                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 260                           chooser);
 261         g_signal_connect (chooser, "clicked",
 262                           G_CALLBACK (avatar_chooser_clicked_cb),
 263                           chooser);
 264
 265         empathy_avatar_chooser_set (chooser, NULL);
 266 }
 267
 268 static void
 269 avatar_chooser_finalize (GObject *object)
 270 {
 271         EmpathyAvatarChooserPriv *priv;
 272
 273         priv = GET_PRIV (object);
 274
 275         avatar_chooser_set_connection (EMPATHY_AVATAR_CHOOSER (object), NULL);
 276         g_assert (priv->connection == NULL);
 277
 278         if (priv->avatar != NULL) {
 279                 empathy_avatar_unref (priv->avatar);
 280         }
 281
 282         g_object_unref (priv->gsettings_ui);
 283
 284         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 285 }
 286
 287 static void
 288 avatar_chooser_set_connection (EmpathyAvatarChooser *self,
 289                                TpConnection         *connection)
 290 {
 291         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 292
 293         if (priv->connection != NULL) {
 294                 g_object_unref (priv->connection);
 295                 priv->connection = NULL;
 296         }
 297
 298         if (connection != NULL) {
 299                 GQuark features[] = { TP_CONNECTION_FEATURE_AVATAR_REQUIREMENTS, 0 };
 300                 priv->connection = g_object_ref (connection);
 301                 tp_proxy_prepare_async (priv->connection, features, NULL, NULL);
 302         }
 303 }
 304
 305 static void
 306 avatar_chooser_error_show (EmpathyAvatarChooser *chooser,
 307                            const gchar          *primary_text,
 308                            const gchar          *secondary_text)
 309 {
 310         GtkWidget *parent;
 311         GtkWidget *dialog;
 312
 313         parent = gtk_widget_get_toplevel (GTK_WIDGET (chooser));
 314         if (!GTK_IS_WINDOW (parent)) {
 315                 parent = NULL;
 316         }
 317
 318         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 319                                          GTK_DIALOG_MODAL,
 320                                          GTK_MESSAGE_WARNING,
 321                                          GTK_BUTTONS_CLOSE,
 322                                          "%s", primary_text);
 323
 324         if (secondary_text != NULL) {
 325                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 326                                                           "%s", secondary_text);
 327         }
 328
 329         g_signal_connect (dialog, "response",
 330                           G_CALLBACK (gtk_widget_destroy), NULL);
 331         gtk_widget_show (dialog);
 332
 333 }
 334
 335 static gboolean
 336 str_in_strv (const gchar  *str,
 337              gchar **strv)
 338 {
 339         if (strv == NULL) {
 340                 return FALSE;
 341         }
 342
 343         while (*strv != NULL) {
 344                 if (g_str_equal (str, *strv)) {
 345                         return TRUE;
 346                 }
 347                 strv++;
 348         }
 349         return FALSE;
 350 }
 351
 352 /* The caller must free the strings stored in satisfactory_format_name and
 353  * satisfactory_mime_type.
 354  */
 355 static gboolean
 356 avatar_chooser_need_mime_type_conversion (const gchar *current_mime_type,
 357                                           gchar      **accepted_mime_types,
 358                                           gchar      **satisfactory_format_name,
 359                                           gchar      **satisfactory_mime_type)
 360 {
 361         gchar   *good_mime_types[] = {"image/jpeg", "image/png", NULL};
 362         guint    i;
 363         GSList  *formats, *l;
 364         gboolean found = FALSE;
 365
 366         *satisfactory_format_name = NULL;
 367         *satisfactory_mime_type = NULL;
 368
 369         /* If there is no accepted format there is nothing we can do */
 370         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 371                 return TRUE;
 372         }
 373
 374         /* If the current mime type is good and accepted, don't change it!
 375          * jpeg is compress better pictures, but png is better for logos and
 376          * could have an alpha layer. */
 377         if (str_in_strv (current_mime_type, good_mime_types) &&
 378             str_in_strv (current_mime_type, accepted_mime_types)) {
 379                 *satisfactory_mime_type = g_strdup (current_mime_type);
 380                 *satisfactory_format_name = g_strdup (current_mime_type +
 381                                                       strlen ("image/"));
 382                 return FALSE;
 383         }
 384
 385         /* The current mime type is either not accepted or not good to use.
 386          * Check if one of the good format is supported... */
 387         for (i = 0; good_mime_types[i] != NULL;  i++) {
 388                 if (str_in_strv (good_mime_types[i], accepted_mime_types)) {
 389                         *satisfactory_mime_type = g_strdup (good_mime_types[i]);
 390                         *satisfactory_format_name = g_strdup (good_mime_types[i] +
 391                                                               strlen ("image/"));
 392                         return TRUE;
 393                 }
 394         }
 395
 396         /* Pick the first supported format we can write */
 397         formats = gdk_pixbuf_get_formats ();
 398         for (l = formats; !found && l != NULL; l = l->next) {
 399                 GdkPixbufFormat *format = l->data;
 400                 gchar **format_mime_types;
 401                 gchar **iter;
 402
 403                 if (!gdk_pixbuf_format_is_writable (format)) {
 404                         continue;
 405                 }
 406
 407                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 408                 for (iter = format_mime_types; *iter != NULL; iter++) {
 409                         if (str_in_strv (*iter, accepted_mime_types)) {
 410                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 411                                 *satisfactory_mime_type = g_strdup (*iter);
 412                                 found = TRUE;
 413                                 break;
 414                         }
 415                 }
 416                 g_strfreev (format_mime_types);
 417         }
 418         g_slist_free (formats);
 419
 420         return TRUE;
 421 }
 422
 423 static EmpathyAvatar *
 424 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 425                                         GdkPixbuf            *pixbuf,
 426                                         EmpathyAvatar        *avatar)
 427 {
 428         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 429         TpAvatarRequirements     *req;
 430         gboolean                  needs_conversion = FALSE;
 431         guint                     width, height;
 432         gchar                    *new_format_name = NULL;
 433         gchar                    *new_mime_type = NULL;
 434         gdouble                   min_factor, max_factor;
 435         gdouble                   factor;
 436         gchar                    *best_image_data = NULL;
 437         gsize                     best_image_size = 0;
 438         guint                     count = 0;
 439
 440         req = tp_connection_get_avatar_requirements (priv->connection);
 441         if (req == NULL) {
 442                 DEBUG ("Avatar requirements not ready");
 443                 return NULL;
 444         }
 445
 446         /* Smaller is the factor, smaller will be the image.
 447          * 0 is an empty image, 1 is the full size. */
 448         min_factor = 0;
 449         max_factor = 1;
 450         factor = 1;
 451
 452         /* Check if we need to convert to another image format */
 453         if (avatar_chooser_need_mime_type_conversion (avatar->format,
 454                                                       req->supported_mime_types,
 455                                                       &new_format_name,
 456                                                       &new_mime_type)) {
 457                 DEBUG ("Format conversion needed, we'll use mime type '%s' "
 458                        "and format name '%s'. Current mime type is '%s'",
 459                        new_mime_type, new_format_name, avatar->format);
 460                 needs_conversion = TRUE;
 461         }
 462
 463         /* If there is no format we can use, report error to the user. */
 464         if (new_mime_type == NULL || new_format_name == NULL) {
 465                 avatar_chooser_error_show (chooser, _("Couldn't convert image"),
 466                                 _("None of the accepted image formats are "
 467                                   "supported on your system"));
 468                 return NULL;
 469         }
 470
 471         /* If width or height are too big, it needs converting. */
 472         width = gdk_pixbuf_get_width (pixbuf);
 473         height = gdk_pixbuf_get_height (pixbuf);
 474         if ((req->maximum_width > 0 && width > req->maximum_width) ||
 475             (req->maximum_height > 0 && height > req->maximum_height)) {
 476                 gdouble h_factor, v_factor;
 477
 478                 h_factor = (gdouble) req->maximum_width / width;
 479                 v_factor = (gdouble) req->maximum_height / height;
 480                 factor = max_factor = MIN (h_factor, v_factor);
 481
 482                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 483                        width, height, req->maximum_width, req->maximum_height);
 484
 485                 needs_conversion = TRUE;
 486         }
 487
 488         /* If the data len is too big and no other conversion is needed,
 489          * try with a lower factor. */
 490         if (req->maximum_bytes > 0 && avatar->len > req->maximum_bytes && !needs_conversion) {
 491                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 492                        "(max is %u bytes), conversion needed.",
 493                        avatar->len, req->maximum_bytes);
 494
 495                 factor = 0.5;
 496                 needs_conversion = TRUE;
 497         }
 498
 499         /* If no conversion is needed, return the avatar */
 500         if (!needs_conversion) {
 501                 g_free (new_format_name);
 502                 g_free (new_mime_type);
 503                 return empathy_avatar_ref (avatar);
 504         }
 505
 506         do {
 507                 GdkPixbuf *pixbuf_scaled = NULL;
 508                 gboolean   saved;
 509                 gint       new_width, new_height;
 510                 gchar     *converted_image_data;
 511                 gsize      converted_image_size;
 512                 GError    *error = NULL;
 513
 514                 if (factor != 1) {
 515                         new_width = width * factor;
 516                         new_height = height * factor;
 517                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 518                                                                  new_width,
 519                                                                  new_height,
 520                                                                  GDK_INTERP_HYPER);
 521                 } else {
 522                         new_width = width;
 523                         new_height = height;
 524                         pixbuf_scaled = g_object_ref (pixbuf);
 525                 }
 526
 527                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 528                         new_width, new_height, new_format_name);
 529
 530                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 531                                                    &converted_image_data,
 532                                                    &converted_image_size,
 533                                                    new_format_name,
 534                                                    &error, NULL);
 535                 g_object_unref (pixbuf_scaled);
 536
 537                 if (!saved) {
 538                         g_free (new_format_name);
 539                         g_free (new_mime_type);
 540                         avatar_chooser_error_show (chooser,
 541                                 _("Couldn't convert image"),
 542                                 error ? error->message : NULL);
 543                         g_clear_error (&error);
 544                         return NULL;
 545                 }
 546
 547                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 548                         converted_image_size);
 549
 550                 /* If the new image satisfy the req, keep it as current best */
 551                 if (req->maximum_bytes == 0 ||
 552                     converted_image_size <= req->maximum_bytes) {
 553                         if (best_image_data)
 554                                 g_free (best_image_data);
 555
 556                         best_image_data = converted_image_data;
 557                         best_image_size = converted_image_size;
 558
 559                         /* If this image is close enough to the optimal size,
 560                          * stop searching */
 561                         if (req->maximum_bytes == 0 ||
 562                             req->maximum_bytes - converted_image_size <= 1024)
 563                                 break;
 564                 } else {
 565                         g_free (converted_image_data);
 566                 }
 567
 568                 /* Make a binary search for the bigest factor that produce
 569                  * an image data size less than max_size */
 570                 if (converted_image_size > req->maximum_bytes)
 571                         max_factor = factor;
 572                 if (converted_image_size < req->maximum_bytes)
 573                         min_factor = factor;
 574                 factor = (min_factor + max_factor)/2;
 575
 576                 if ((int) (width * factor) == new_width ||
 577                     (int) (height * factor) == new_height) {
 578                         /* min_factor and max_factor are too close, so the new
 579                          * factor will produce the same image as previous
 580                          * iteration. No need to continue, we already found
 581                          * the optimal size. */
 582                         break;
 583                 }
 584
 585                 /* Do 10 iterations in the worst case */
 586         } while (++count < 10);
 587
 588         g_free (new_format_name);
 589
 590         /* Takes ownership of new_mime_type and best_image_data */
 591         avatar = empathy_avatar_new ((guchar *) best_image_data,
 592                 best_image_size, new_mime_type, NULL);
 593
 594         return avatar;
 595 }
 596
 597 static void
 598 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 599 {
 600         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 601         GtkWidget *image;
 602
 603         if (priv->avatar != NULL) {
 604                 empathy_avatar_unref (priv->avatar);
 605                 priv->avatar = NULL;
 606         }
 607
 608         image = gtk_image_new_from_icon_name (EMPATHY_IMAGE_AVATAR_DEFAULT,
 609                 GTK_ICON_SIZE_DIALOG);
 610         gtk_button_set_image (GTK_BUTTON (chooser), image);
 611         g_signal_emit (chooser, signals[CHANGED], 0);
 612 }
 613
 614 static void
 615 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 616                                     gchar                *data,
 617                                     gsize                 size,
 618                                     gboolean              set_locally)
 619 {
 620         GdkPixbuf     *pixbuf;
 621         EmpathyAvatar *avatar = NULL;
 622         gchar         *mime_type = NULL;
 623
 624         if (data == NULL) {
 625                 avatar_chooser_clear_image (chooser);
 626                 return;
 627         }
 628
 629         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 630         if (pixbuf == NULL) {
 631                 g_free (data);
 632                 data = NULL;
 633                 return;
 634         }
 635
 636         /* avatar takes ownership of data and mime_type */
 637         avatar = empathy_avatar_new ((guchar *) data, size, mime_type, NULL);
 638
 639         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 640 }
 641
 642 static void
 643 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 644                                       EmpathyAvatar        *avatar,
 645                                       gboolean              set_locally)
 646 {
 647         GdkPixbuf *pixbuf;
 648         gchar     *mime_type = NULL;
 649
 650         g_assert (avatar != NULL);
 651
 652         pixbuf = empathy_pixbuf_from_data_and_mime ((gchar *) avatar->data,
 653                                                     avatar->len,
 654                                                     &mime_type);
 655         if (pixbuf == NULL) {
 656                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 657                 return;
 658         }
 659
 660         if (avatar->format == NULL) {
 661                 avatar->format = mime_type;
 662         } else {
 663                 if (strcmp (mime_type, avatar->format)) {
 664                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 665                                 avatar->format, mime_type);
 666                 }
 667                 g_free (mime_type);
 668         }
 669
 670         empathy_avatar_ref (avatar);
 671
 672         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 673 }
 674
 675 static void
 676 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 677                           EmpathyAvatar        *avatar,
 678                           GdkPixbuf            *pixbuf,
 679                           gboolean              set_locally)
 680 {
 681         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 682         GdkPixbuf                *pixbuf_view;
 683         GtkWidget                *image;
 684
 685         g_assert (avatar != NULL);
 686         g_assert (pixbuf != NULL);
 687
 688         if (set_locally) {
 689                 EmpathyAvatar *conv;
 690
 691                 conv = avatar_chooser_maybe_convert_and_scale (chooser,
 692                         pixbuf, avatar);
 693                 empathy_avatar_unref (avatar);
 694
 695                 if (conv == NULL) {
 696                         /* An error occured; don't change the avatar. */
 697                         return;
 698                 }
 699
 700                 avatar = conv;
 701         }
 702
 703         if (priv->avatar != NULL) {
 704                 empathy_avatar_unref (priv->avatar);
 705         }
 706         priv->avatar = avatar;
 707
 708         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 709         image = gtk_image_new_from_pixbuf (pixbuf_view);
 710
 711         gtk_button_set_image (GTK_BUTTON (chooser), image);
 712         g_signal_emit (chooser, signals[CHANGED], 0);
 713
 714         g_object_unref (pixbuf_view);
 715         g_object_unref (pixbuf);
 716 }
 717
 718 static void
 719 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 720                                     const gchar          *filename)
 721 {
 722         gchar  *image_data = NULL;
 723         gsize   image_size = 0;
 724         GError *error = NULL;
 725
 726         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 727                 DEBUG ("Failed to load image from '%s': %s", filename,
 728                         error ? error->message : "No error given");
 729
 730                 g_clear_error (&error);
 731                 return;
 732         }
 733
 734         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 735 }
 736
 737 static void
 738 avatar_chooser_set_avatar_from_pixbuf (EmpathyAvatarChooser *chooser,
 739                                        GdkPixbuf            *pb)
 740 {
 741         /* dup the string as empathy_avatar_new steals ownership of the it */
 742         gchar         *mime = g_strdup ("image/png");
 743         gsize          size;
 744         gchar         *buf;
 745         EmpathyAvatar *avatar = NULL;
 746         GError        *error = NULL;
 747         if (!gdk_pixbuf_save_to_buffer (pb, &buf, &size, "png", &error, NULL)) {
 748                 avatar_chooser_error_show (chooser,
 749                         _("Couldn't save pixbuf to png"),
 750                         error ? error->message : NULL);
 751                 g_clear_error (&error);
 752                 return;
 753         }
 754         avatar = empathy_avatar_new ((guchar *) buf, size, mime, NULL);
 755         avatar_chooser_set_image (chooser, avatar, pb, TRUE);
 756 }
 757
 758
 759 static gboolean
 760 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 761                               GdkDragContext     *context,
 762                               gint                x,
 763                               gint                y,
 764                               guint               time_,
 765                               EmpathyAvatarChooser *chooser)
 766 {
 767         GList                  *p;
 768
 769         for (p = gdk_drag_context_list_targets (context); p != NULL;
 770              p = p->next) {
 771                 gchar *possible_type;
 772
 773                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 774
 775                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 776                         g_free (possible_type);
 777                         gdk_drag_status (context, GDK_ACTION_COPY, time_);
 778
 779                         return TRUE;
 780                 }
 781
 782                 g_free (possible_type);
 783         }
 784
 785         return FALSE;
 786 }
 787
 788 static void
 789 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 790                              GdkDragContext     *context,
 791                              guint               time_,
 792                              EmpathyAvatarChooser *chooser)
 793 {
 794 }
 795
 796 static gboolean
 797 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 798                             GdkDragContext     *context,
 799                             gint                x,
 800                             gint                y,
 801                             guint               time_,
 802                             EmpathyAvatarChooser *chooser)
 803 {
 804         GList                  *p;
 805
 806         if (gdk_drag_context_list_targets (context) == NULL) {
 807                 return FALSE;
 808         }
 809
 810         for (p = gdk_drag_context_list_targets (context);
 811              p != NULL; p = p->next) {
 812                 char *possible_type;
 813
 814                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 815                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 816                         g_free (possible_type);
 817                         gtk_drag_get_data (widget, context,
 818                                            GDK_POINTER_TO_ATOM (p->data),
 819                                            time_);
 820
 821                         return TRUE;
 822                 }
 823
 824                 g_free (possible_type);
 825         }
 826
 827         return FALSE;
 828 }
 829
 830 static void
 831 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 832                                      GdkDragContext     *context,
 833                                      gint                x,
 834                                      gint                y,
 835                                      GtkSelectionData   *selection_data,
 836                                      guint               info,
 837                                      guint               time_,
 838                                      EmpathyAvatarChooser *chooser)
 839 {
 840         gchar    *target_type;
 841         gboolean  handled = FALSE;
 842
 843         target_type = gdk_atom_name (gtk_selection_data_get_target (selection_data));
 844         if (!strcmp (target_type, URI_LIST_TYPE)) {
 845                 GFile            *file;
 846                 gchar            *nl;
 847                 gchar            *data = NULL;
 848                 gsize             bytes_read;
 849
 850                 nl = strstr ((gchar *) gtk_selection_data_get_data (selection_data),
 851                                                 "\r\n");
 852                 if (nl) {
 853                         gchar *uri;
 854
 855                         uri = g_strndup ((gchar *) gtk_selection_data_get_data (selection_data),
 856                                          nl - (gchar *) gtk_selection_data_get_data (selection_data));
 857
 858                         file = g_file_new_for_uri (uri);
 859                         g_free (uri);
 860                 } else {
 861                         file = g_file_new_for_uri ((gchar *) gtk_selection_data_get_data (
 862                                                 selection_data));
 863                 }
 864
 865                 handled = g_file_load_contents (file, NULL, &data, &bytes_read,
 866                                                 NULL, NULL);
 867
 868                 if (handled) {
 869                         /* this in turn calls empathy_avatar_new (), which assumes
 870                          * ownership of data.
 871                          */
 872                         avatar_chooser_set_image_from_data (chooser, data,
 873                                                             bytes_read,
 874                                                             TRUE);
 875                 }
 876
 877                 g_object_unref (file);
 878         }
 879
 880         gtk_drag_finish (context, handled, FALSE, time_);
 881 }
 882
 883 static void
 884 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 885                                   EmpathyAvatarChooser *chooser)
 886 {
 887         gchar *filename;
 888
 889         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 890
 891         if (filename) {
 892                 GtkWidget *image;
 893                 GdkPixbuf *pixbuf = NULL;
 894                 GdkPixbuf *scaled_pixbuf;
 895
 896                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 897
 898                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 899
 900                 if (pixbuf) {
 901                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 902                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 903                         g_object_unref (scaled_pixbuf);
 904                         g_object_unref (pixbuf);
 905                 } else {
 906                         gtk_image_set_from_stock (GTK_IMAGE (image),
 907                                                   "gtk-dialog-question",
 908                                                   GTK_ICON_SIZE_DIALOG);
 909                 }
 910
 911                 g_free (filename);
 912         }
 913
 914         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 915 }
 916
 917 #ifdef HAVE_CHEESE
 918 static gboolean
 919 destroy_chooser (GtkWidget *chooser)
 920 {
 921         gtk_widget_destroy (chooser);
 922         return FALSE;
 923 }
 924
 925 static void
 926 webcam_response_cb (GtkDialog            *dialog,
 927                     int                   response,
 928                     EmpathyAvatarChooser *chooser)
 929 {
 930         if (response == GTK_RESPONSE_ACCEPT) {
 931                 GdkPixbuf           *pb;
 932                 CheeseAvatarChooser *cheese_chooser;
 933
 934                 cheese_chooser = CHEESE_AVATAR_CHOOSER (dialog);
 935                 pb = cheese_avatar_chooser_get_picture (cheese_chooser);
 936                 avatar_chooser_set_avatar_from_pixbuf (chooser, pb);
 937         }
 938         if (response != GTK_RESPONSE_DELETE_EVENT &&
 939             response != GTK_RESPONSE_NONE)
 940                 g_idle_add ((GSourceFunc) destroy_chooser, dialog);
 941 }
 942
 943 static void
 944 choose_avatar_from_webcam (GtkWidget            *widget,
 945                            EmpathyAvatarChooser *chooser)
 946 {
 947         GtkWidget *window;
 948
 949         window = cheese_avatar_chooser_new ();
 950
 951         gtk_window_set_transient_for (GTK_WINDOW (window),
 952                                       GTK_WINDOW (empathy_get_toplevel_window (GTK_WIDGET (chooser))));
 953         gtk_window_set_modal (GTK_WINDOW (window), TRUE);
 954         g_signal_connect (G_OBJECT (window), "response",
 955                           G_CALLBACK (webcam_response_cb), chooser);
 956         gtk_widget_show (window);
 957 }
 958 #endif /* HAVE_CHEESE */
 959
 960 static void
 961 avatar_chooser_response_cb (GtkWidget            *widget,
 962                             gint                  response,
 963                             EmpathyAvatarChooser *chooser)
 964 {
 965         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 966
 967         priv->chooser_dialog = NULL;
 968
 969         if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE) {
 970                 gchar *filename;
 971                 gchar *path;
 972
 973                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 974                 avatar_chooser_set_image_from_file (chooser, filename);
 975                 g_free (filename);
 976
 977                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 978                 if (path) {
 979                         g_settings_set_string (priv->gsettings_ui,
 980                                                EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 981                                                path);
 982
 983                         g_free (path);
 984                 }
 985         }
 986         else if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE) {
 987                 /* This corresponds to "No Image", not to "Cancel" */
 988                 avatar_chooser_clear_image (chooser);
 989         }
 990         #ifdef HAVE_CHEESE
 991         else if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM) {
 992                 /* This corresponds to "Camera Picture" */
 993                 choose_avatar_from_webcam (widget, chooser);
 994         }
 995         #endif
 996         gtk_widget_destroy (widget);
 997 }
 998
 999 static void
1000 avatar_chooser_clicked_cb (GtkWidget            *button,
1001                            EmpathyAvatarChooser *chooser)
1002 {
1003         GtkFileChooser *chooser_dialog;
1004         GtkWidget      *image;
1005         gchar          *saved_dir = NULL;
1006         const gchar    *default_dir = DEFAULT_DIR;
1007         const gchar    *pics_dir;
1008         GtkFileFilter  *filter;
1009         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
1010
1011         if (priv->chooser_dialog) {
1012                 gtk_window_present (GTK_WINDOW (priv->chooser_dialog));
1013                 return;
1014         }
1015
1016         priv->chooser_dialog = GTK_FILE_CHOOSER (
1017                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
1018                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
1019                                              GTK_FILE_CHOOSER_ACTION_OPEN,
1020                                              #ifdef HAVE_CHEESE
1021                                              _("Take a picture..."),
1022                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM,
1023                                              #endif
1024                                              _("No Image"),
1025                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE,
1026                                              GTK_STOCK_CANCEL,
1027                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_CANCEL,
1028                                              GTK_STOCK_OPEN,
1029                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE,
1030                                              NULL));
1031         chooser_dialog = priv->chooser_dialog;
1032         gtk_window_set_destroy_with_parent (GTK_WINDOW (chooser_dialog), TRUE);
1033
1034         /* Get special dirs */
1035         saved_dir = g_settings_get_string (priv->gsettings_ui,
1036                                            EMPATHY_PREFS_UI_AVATAR_DIRECTORY);
1037
1038         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
1039                 g_free (saved_dir);
1040                 saved_dir = NULL;
1041         }
1042         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
1043                 default_dir = NULL;
1044         }
1045         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
1046         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
1047                 pics_dir = NULL;
1048         }
1049
1050         /* Set current dir to the last one or to DEFAULT_DIR or to home */
1051         if (saved_dir) {
1052                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
1053         }
1054         else if (pics_dir) {
1055                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
1056         }
1057         else if (default_dir) {
1058                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
1059         } else {
1060                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
1061         }
1062
1063         /* Add shortcuts to special dirs */
1064         if (saved_dir) {
1065                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
1066         }
1067         else if (pics_dir) {
1068                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
1069         }
1070         if (default_dir) {
1071                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
1072         }
1073
1074         /* Setup preview image */
1075         image = gtk_image_new ();
1076         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
1077         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
1078         gtk_widget_show (image);
1079         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
1080         g_signal_connect (chooser_dialog, "update-preview",
1081                           G_CALLBACK (avatar_chooser_update_preview_cb),
1082                           chooser);
1083
1084         /* Setup filers */
1085         filter = gtk_file_filter_new ();
1086         gtk_file_filter_set_name (filter, _("Images"));
1087         gtk_file_filter_add_pixbuf_formats (filter);
1088         gtk_file_chooser_add_filter (chooser_dialog, filter);
1089         filter = gtk_file_filter_new ();
1090         gtk_file_filter_set_name (filter, _("All Files"));
1091         gtk_file_filter_add_pattern (filter, "*");
1092         gtk_file_chooser_add_filter (chooser_dialog, filter);
1093
1094         /* Setup response */
1095         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE);
1096         g_signal_connect (chooser_dialog, "response",
1097                           G_CALLBACK (avatar_chooser_response_cb),
1098                           chooser);
1099
1100         gtk_widget_show (GTK_WIDGET (chooser_dialog));
1101
1102         g_free (saved_dir);
1103 }
1104
1105 /**
1106  * empathy_avatar_chooser_new:
1107  *
1108  * Creates a new #EmpathyAvatarChooser.
1109  *
1110  * Return value: a new #EmpathyAvatarChooser
1111  */
1112 GtkWidget *
1113 empathy_avatar_chooser_new (void)
1114 {
1115         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
1116 }
1117
1118 /**
1119  * empathy_avatar_chooser_set:
1120  * @chooser: an #EmpathyAvatarChooser
1121  * @avatar: a new #EmpathyAvatar
1122  *
1123  * Sets the @chooser to display the avatar indicated by @avatar.
1124  */
1125 void
1126 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
1127                             EmpathyAvatar        *avatar)
1128 {
1129         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1130
1131         if (avatar != NULL) {
1132                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
1133         } else {
1134                 avatar_chooser_clear_image (chooser);
1135         }
1136 }
1137
1138 /**
1139  * empathy_avatar_chooser_get_image_data:
1140  * @chooser: an #EmpathyAvatarChooser
1141  * @data: avatar bytes
1142  * @data_size: size of @data
1143  * @mime_type: avatar mime-type
1144  *
1145  * Gets image data about the currently selected avatar.
1146  */
1147 void
1148 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
1149                                        const gchar          **data,
1150                                        gsize                 *data_size,
1151                                        const gchar          **mime_type)
1152 {
1153         EmpathyAvatarChooserPriv *priv;
1154
1155         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1156
1157         priv = GET_PRIV (chooser);
1158
1159         if (priv->avatar != NULL) {
1160                 if (data != NULL) {
1161                         *data = (gchar *) priv->avatar->data;
1162                 }
1163                 if (data_size != NULL) {
1164                         *data_size = priv->avatar->len;
1165                 }
1166                 if (mime_type != NULL) {
1167                         *mime_type = priv->avatar->format;
1168                 }
1169         } else {
1170                 if (data != NULL) {
1171                         *data = NULL;
1172                 }
1173                 if (data_size != NULL) {
1174                         *data_size = 0;
1175                 }
1176                 if (mime_type != NULL) {
1177                         *mime_type = NULL;
1178                 }
1179         }
1180 }
1181
1182 void
1183 empathy_avatar_chooser_set_account (EmpathyAvatarChooser *self,
1184                                        TpAccount *account)
1185 {
1186         g_return_if_fail (account != NULL);
1187
1188         avatar_chooser_set_connection (self, tp_account_get_connection (account));
1189         g_object_notify (G_OBJECT (self), "connection");
1190 }