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