libempathy-gtk/empathy-avatar-chooser.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2006-2007 Imendio AB.
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA  02110-1301  USA
  19  *
  20  * Authors: Based on Novell's e-image-chooser.
  21  *          Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <string.h>
  27
  28 #include <glib/gi18n-lib.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-gsettings.h>
  33 #include <libempathy/empathy-utils.h>
  34
  35 #include "empathy-avatar-chooser.h"
  36 #include "empathy-images.h"
  37 #include "empathy-ui-utils.h"
  38
  39 #ifdef HAVE_CHEESE
  40 #include <cheese-avatar-chooser.h>
  41 #endif /* HAVE_CHEESE */
  42
  43
  44 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  45 #include <libempathy/empathy-debug.h>
  46
  47 /**
  48  * SECTION:empathy-avatar-chooser
  49  * @title: EmpathyAvatarChooser
  50  * @short_description: A widget used to change avatar
  51  * @include: libempathy-gtk/empathy-avatar-chooser.h
  52  *
  53  * #EmpathyAvatarChooser is a widget which extends #GtkButton to
  54  * provide a way of changing avatar.
  55  */
  56
  57 /**
  58  * EmpathyAvatarChooser:
  59  * @parent: parent object
  60  *
  61  * Widget which extends #GtkButton to provide a way of changing avatar.
  62  */
  63
  64 #define AVATAR_SIZE_SAVE 96
  65 #define AVATAR_SIZE_VIEW 64
  66 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  67
  68 #ifdef HAVE_CHEESE
  69 /*
  70  * A custom GtkResponseType used when the user presses the
  71  * "Camera Picture" button. Any positive value would be sufficient.
  72  */
  73 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM   10
  74 #endif
  75 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE GTK_RESPONSE_NO
  76 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_CANCEL   GTK_RESPONSE_CANCEL
  77 #define EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE     GTK_RESPONSE_OK
  78
  79 struct _EmpathyAvatarChooserPrivate {
  80         TpConnection            *connection;
  81         GtkFileChooser          *chooser_dialog;
  82
  83         gulong ready_handler_id;
  84
  85         EmpathyAvatar *avatar;
  86         GSettings *gsettings_ui;
  87 };
  88
  89 enum {
  90         CHANGED,
  91         LAST_SIGNAL
  92 };
  93
  94 enum {
  95         PROP_0,
  96         PROP_CONNECTION
  97 };
  98
  99 static guint signals [LAST_SIGNAL];
 100
 101 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 102
 103 /*
 104  * Drag and drop stuff
 105  */
 106 #define URI_LIST_TYPE "text/uri-list"
 107
 108 enum DndTargetType {
 109         DND_TARGET_TYPE_URI_LIST
 110 };
 111
 112 static const GtkTargetEntry drop_types[] = {
 113         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 114 };
 115
 116 static void
 117 avatar_chooser_get_property (GObject    *object,
 118                              guint       param_id,
 119                              GValue     *value,
 120                              GParamSpec *pspec)
 121 {
 122         EmpathyAvatarChooser *self = (EmpathyAvatarChooser *) object;
 123
 124         switch (param_id) {
 125         case PROP_CONNECTION:
 126                 g_value_set_object (value, self->priv->connection);
 127                 break;
 128         default:
 129                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 130                 break;
 131         }
 132 }
 133
 134 static void
 135 avatar_chooser_set_connection (EmpathyAvatarChooser *self,
 136                                TpConnection         *connection)
 137 {
 138         tp_clear_object (&self->priv->connection);
 139
 140         if (connection != NULL) {
 141                 GQuark features[] = { TP_CONNECTION_FEATURE_AVATAR_REQUIREMENTS, 0 };
 142                 self->priv->connection = g_object_ref (connection);
 143                 tp_proxy_prepare_async (self->priv->connection, features, NULL, NULL);
 144         }
 145 }
 146
 147 static void
 148 avatar_chooser_set_property (GObject      *object,
 149                              guint         param_id,
 150                              const GValue *value,
 151                              GParamSpec   *pspec)
 152 {
 153         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 154
 155         switch (param_id) {
 156         case PROP_CONNECTION:
 157                 avatar_chooser_set_connection (self, g_value_get_object (value));
 158                 break;
 159         default:
 160                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 161                 break;
 162         }
 163 }
 164
 165 static void
 166 avatar_chooser_finalize (GObject *object)
 167 {
 168         EmpathyAvatarChooser *self = (EmpathyAvatarChooser *) object;
 169
 170         avatar_chooser_set_connection (EMPATHY_AVATAR_CHOOSER (object), NULL);
 171         g_assert (self->priv->connection == NULL);
 172
 173         tp_clear_pointer (&self->priv->avatar, empathy_avatar_unref);
 174
 175         tp_clear_object (&self->priv->gsettings_ui);
 176
 177         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 178 }
 179
 180 static void
 181 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 182 {
 183         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 184         GParamSpec *param_spec;
 185
 186         object_class->finalize = avatar_chooser_finalize;
 187         object_class->get_property = avatar_chooser_get_property;
 188         object_class->set_property = avatar_chooser_set_property;
 189
 190         /**
 191          * EmpathyAvatarChooser::changed:
 192          * @self: an #EmpathyAvatarChooser
 193          *
 194          * Emitted when the chosen avatar has changed.
 195          *
 196          */
 197         signals[CHANGED] =
 198                 g_signal_new ("changed",
 199                               G_TYPE_FROM_CLASS (klass),
 200                               G_SIGNAL_RUN_LAST,
 201                               0,
 202                               NULL, NULL,
 203                               g_cclosure_marshal_VOID__VOID,
 204                               G_TYPE_NONE, 0);
 205
 206         /**
 207          * EmpathyAvatarChooser:connection:
 208          *
 209          * The #TpConnection whose avatar should be shown and modified by
 210          * the #EmpathyAvatarChooser instance.
 211          */
 212         param_spec = g_param_spec_object ("connection",
 213                                           "TpConnection",
 214                                           "TpConnection whose avatar should be "
 215                                           "shown and modified by this widget",
 216                                           TP_TYPE_CONNECTION,
 217                                           G_PARAM_READWRITE |
 218                                           G_PARAM_STATIC_STRINGS);
 219         g_object_class_install_property (object_class,
 220                                          PROP_CONNECTION,
 221                                          param_spec);
 222
 223         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPrivate));
 224 }
 225
 226 static gboolean
 227 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 228                               GdkDragContext     *context,
 229                               gint                x,
 230                               gint                y,
 231                               guint               time_,
 232                               EmpathyAvatarChooser *self)
 233 {
 234         GList                  *p;
 235
 236         for (p = gdk_drag_context_list_targets (context); p != NULL;
 237              p = p->next) {
 238                 gchar *possible_type;
 239
 240                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 241
 242                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 243                         g_free (possible_type);
 244                         gdk_drag_status (context, GDK_ACTION_COPY, time_);
 245
 246                         return TRUE;
 247                 }
 248
 249                 g_free (possible_type);
 250         }
 251
 252         return FALSE;
 253 }
 254
 255 static void
 256 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 257                              GdkDragContext     *context,
 258                              guint               time_,
 259                              EmpathyAvatarChooser *self)
 260 {
 261 }
 262
 263 static gboolean
 264 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 265                             GdkDragContext     *context,
 266                             gint                x,
 267                             gint                y,
 268                             guint               time_,
 269                             EmpathyAvatarChooser *self)
 270 {
 271         GList                  *p;
 272
 273         if (gdk_drag_context_list_targets (context) == NULL) {
 274                 return FALSE;
 275         }
 276
 277         for (p = gdk_drag_context_list_targets (context);
 278              p != NULL; p = p->next) {
 279                 char *possible_type;
 280
 281                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 282                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 283                         g_free (possible_type);
 284                         gtk_drag_get_data (widget, context,
 285                                            GDK_POINTER_TO_ATOM (p->data),
 286                                            time_);
 287
 288                         return TRUE;
 289                 }
 290
 291                 g_free (possible_type);
 292         }
 293
 294         return FALSE;
 295 }
 296
 297 static void
 298 avatar_chooser_clear_image (EmpathyAvatarChooser *self)
 299 {
 300         GtkWidget *image;
 301
 302         tp_clear_pointer (&self->priv->avatar, empathy_avatar_unref);
 303
 304         image = gtk_image_new_from_icon_name (EMPATHY_IMAGE_AVATAR_DEFAULT,
 305                 GTK_ICON_SIZE_DIALOG);
 306         gtk_button_set_image (GTK_BUTTON (self), image);
 307         g_signal_emit (self, signals[CHANGED], 0);
 308 }
 309
 310 static gboolean
 311 str_in_strv (const gchar  *str,
 312              gchar **strv)
 313 {
 314         if (strv == NULL) {
 315                 return FALSE;
 316         }
 317
 318         while (*strv != NULL) {
 319                 if (g_str_equal (str, *strv)) {
 320                         return TRUE;
 321                 }
 322                 strv++;
 323         }
 324         return FALSE;
 325 }
 326
 327 /* The caller must free the strings stored in satisfactory_format_name and
 328  * satisfactory_mime_type.
 329  */
 330 static gboolean
 331 avatar_chooser_need_mime_type_conversion (const gchar *current_mime_type,
 332                                           gchar      **accepted_mime_types,
 333                                           gchar      **satisfactory_format_name,
 334                                           gchar      **satisfactory_mime_type)
 335 {
 336         gchar   *good_mime_types[] = {"image/jpeg", "image/png", NULL};
 337         guint    i;
 338         GSList  *formats, *l;
 339         gboolean found = FALSE;
 340
 341         *satisfactory_format_name = NULL;
 342         *satisfactory_mime_type = NULL;
 343
 344         /* If there is no accepted format there is nothing we can do */
 345         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 346                 return TRUE;
 347         }
 348
 349         /* If the current mime type is good and accepted, don't change it!
 350          * jpeg is compress better pictures, but png is better for logos and
 351          * could have an alpha layer. */
 352         if (str_in_strv (current_mime_type, good_mime_types) &&
 353             str_in_strv (current_mime_type, accepted_mime_types)) {
 354                 *satisfactory_mime_type = g_strdup (current_mime_type);
 355                 *satisfactory_format_name = g_strdup (current_mime_type +
 356                                                       strlen ("image/"));
 357                 return FALSE;
 358         }
 359
 360         /* The current mime type is either not accepted or not good to use.
 361          * Check if one of the good format is supported... */
 362         for (i = 0; good_mime_types[i] != NULL;  i++) {
 363                 if (str_in_strv (good_mime_types[i], accepted_mime_types)) {
 364                         *satisfactory_mime_type = g_strdup (good_mime_types[i]);
 365                         *satisfactory_format_name = g_strdup (good_mime_types[i] +
 366                                                               strlen ("image/"));
 367                         return TRUE;
 368                 }
 369         }
 370
 371         /* Pick the first supported format we can write */
 372         formats = gdk_pixbuf_get_formats ();
 373         for (l = formats; !found && l != NULL; l = l->next) {
 374                 GdkPixbufFormat *format = l->data;
 375                 gchar **format_mime_types;
 376                 gchar **iter;
 377
 378                 if (!gdk_pixbuf_format_is_writable (format)) {
 379                         continue;
 380                 }
 381
 382                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 383                 for (iter = format_mime_types; *iter != NULL; iter++) {
 384                         if (str_in_strv (*iter, accepted_mime_types)) {
 385                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 386                                 *satisfactory_mime_type = g_strdup (*iter);
 387                                 found = TRUE;
 388                                 break;
 389                         }
 390                 }
 391                 g_strfreev (format_mime_types);
 392         }
 393         g_slist_free (formats);
 394
 395         return TRUE;
 396 }
 397
 398 static void
 399 avatar_chooser_error_show (EmpathyAvatarChooser *self,
 400                            const gchar          *primary_text,
 401                            const gchar          *secondary_text)
 402 {
 403         GtkWidget *parent;
 404         GtkWidget *dialog;
 405
 406         parent = gtk_widget_get_toplevel (GTK_WIDGET (self));
 407         if (!GTK_IS_WINDOW (parent)) {
 408                 parent = NULL;
 409         }
 410
 411         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 412                                          GTK_DIALOG_MODAL,
 413                                          GTK_MESSAGE_WARNING,
 414                                          GTK_BUTTONS_CLOSE,
 415                                          "%s", primary_text);
 416
 417         if (secondary_text != NULL) {
 418                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 419                                                           "%s", secondary_text);
 420         }
 421
 422         g_signal_connect (dialog, "response",
 423                           G_CALLBACK (gtk_widget_destroy), NULL);
 424         gtk_widget_show (dialog);
 425
 426 }
 427
 428 static EmpathyAvatar *
 429 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *self,
 430                                         GdkPixbuf            *pixbuf,
 431                                         EmpathyAvatar        *avatar)
 432 {
 433         TpAvatarRequirements     *req;
 434         gboolean                  needs_conversion = FALSE;
 435         guint                     width, height;
 436         gchar                    *new_format_name = NULL;
 437         gchar                    *new_mime_type = NULL;
 438         gdouble                   min_factor, max_factor;
 439         gdouble                   factor;
 440         gchar                    *best_image_data = NULL;
 441         gsize                     best_image_size = 0;
 442         guint                     count = 0;
 443
 444         req = tp_connection_get_avatar_requirements (self->priv->connection);
 445         if (req == NULL) {
 446                 DEBUG ("Avatar requirements not ready");
 447                 return NULL;
 448         }
 449
 450         /* Smaller is the factor, smaller will be the image.
 451          * 0 is an empty image, 1 is the full size. */
 452         min_factor = 0;
 453         max_factor = 1;
 454         factor = 1;
 455
 456         /* Check if we need to convert to another image format */
 457         if (avatar_chooser_need_mime_type_conversion (avatar->format,
 458                                                       req->supported_mime_types,
 459                                                       &new_format_name,
 460                                                       &new_mime_type)) {
 461                 DEBUG ("Format conversion needed, we'll use mime type '%s' "
 462                        "and format name '%s'. Current mime type is '%s'",
 463                        new_mime_type, new_format_name, avatar->format);
 464                 needs_conversion = TRUE;
 465         }
 466
 467         /* If there is no format we can use, report error to the user. */
 468         if (new_mime_type == NULL || new_format_name == NULL) {
 469                 avatar_chooser_error_show (self, _("Couldn't convert image"),
 470                                 _("None of the accepted image formats are "
 471                                   "supported on your system"));
 472                 return NULL;
 473         }
 474
 475         /* If width or height are too big, it needs converting. */
 476         width = gdk_pixbuf_get_width (pixbuf);
 477         height = gdk_pixbuf_get_height (pixbuf);
 478         if ((req->maximum_width > 0 && width > req->maximum_width) ||
 479             (req->maximum_height > 0 && height > req->maximum_height)) {
 480                 gdouble h_factor, v_factor;
 481
 482                 h_factor = (gdouble) req->maximum_width / width;
 483                 v_factor = (gdouble) req->maximum_height / height;
 484                 factor = max_factor = MIN (h_factor, v_factor);
 485
 486                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 487                        width, height, req->maximum_width, req->maximum_height);
 488
 489                 needs_conversion = TRUE;
 490         }
 491
 492         /* If the data len is too big and no other conversion is needed,
 493          * try with a lower factor. */
 494         if (req->maximum_bytes > 0 && avatar->len > req->maximum_bytes && !needs_conversion) {
 495                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 496                        "(max is %u bytes), conversion needed.",
 497                        avatar->len, req->maximum_bytes);
 498
 499                 factor = 0.5;
 500                 needs_conversion = TRUE;
 501         }
 502
 503         /* If no conversion is needed, return the avatar */
 504         if (!needs_conversion) {
 505                 g_free (new_format_name);
 506                 g_free (new_mime_type);
 507                 return empathy_avatar_ref (avatar);
 508         }
 509
 510         do {
 511                 GdkPixbuf *pixbuf_scaled = NULL;
 512                 gboolean   saved;
 513                 gint       new_width, new_height;
 514                 gchar     *converted_image_data;
 515                 gsize      converted_image_size;
 516                 GError    *error = NULL;
 517
 518                 if (factor != 1) {
 519                         new_width = width * factor;
 520                         new_height = height * factor;
 521                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 522                                                                  new_width,
 523                                                                  new_height,
 524                                                                  GDK_INTERP_HYPER);
 525                 } else {
 526                         new_width = width;
 527                         new_height = height;
 528                         pixbuf_scaled = g_object_ref (pixbuf);
 529                 }
 530
 531                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 532                         new_width, new_height, new_format_name);
 533
 534                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 535                                                    &converted_image_data,
 536                                                    &converted_image_size,
 537                                                    new_format_name,
 538                                                    &error, NULL);
 539                 g_object_unref (pixbuf_scaled);
 540
 541                 if (!saved) {
 542                         g_free (new_format_name);
 543                         g_free (new_mime_type);
 544                         avatar_chooser_error_show (self,
 545                                 _("Couldn't convert image"),
 546                                 error ? error->message : NULL);
 547                         g_clear_error (&error);
 548                         return NULL;
 549                 }
 550
 551                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 552                         converted_image_size);
 553
 554                 /* If the new image satisfy the req, keep it as current best */
 555                 if (req->maximum_bytes == 0 ||
 556                     converted_image_size <= req->maximum_bytes) {
 557                         if (best_image_data)
 558                                 g_free (best_image_data);
 559
 560                         best_image_data = converted_image_data;
 561                         best_image_size = converted_image_size;
 562
 563                         /* If this image is close enough to the optimal size,
 564                          * stop searching */
 565                         if (req->maximum_bytes == 0 ||
 566                             req->maximum_bytes - converted_image_size <= 1024)
 567                                 break;
 568                 } else {
 569                         g_free (converted_image_data);
 570                 }
 571
 572                 /* Make a binary search for the bigest factor that produce
 573                  * an image data size less than max_size */
 574                 if (converted_image_size > req->maximum_bytes)
 575                         max_factor = factor;
 576                 if (converted_image_size < req->maximum_bytes)
 577                         min_factor = factor;
 578                 factor = (min_factor + max_factor)/2;
 579
 580                 if ((int) (width * factor) == new_width ||
 581                     (int) (height * factor) == new_height) {
 582                         /* min_factor and max_factor are too close, so the new
 583                          * factor will produce the same image as previous
 584                          * iteration. No need to continue, we already found
 585                          * the optimal size. */
 586                         break;
 587                 }
 588
 589                 /* Do 10 iterations in the worst case */
 590         } while (++count < 10);
 591
 592         g_free (new_format_name);
 593
 594         /* Takes ownership of new_mime_type and best_image_data */
 595         avatar = empathy_avatar_new ((guchar *) best_image_data,
 596                 best_image_size, new_mime_type, NULL);
 597
 598         return avatar;
 599 }
 600
 601 static void
 602 avatar_chooser_set_image (EmpathyAvatarChooser *self,
 603                           EmpathyAvatar        *avatar,
 604                           GdkPixbuf            *pixbuf,
 605                           gboolean              set_locally)
 606 {
 607         GdkPixbuf                *pixbuf_view;
 608         GtkWidget                *image;
 609
 610         g_assert (avatar != NULL);
 611         g_assert (pixbuf != NULL);
 612
 613         if (set_locally) {
 614                 EmpathyAvatar *conv;
 615
 616                 conv = avatar_chooser_maybe_convert_and_scale (self,
 617                         pixbuf, avatar);
 618                 empathy_avatar_unref (avatar);
 619
 620                 if (conv == NULL) {
 621                         /* An error occured; don't change the avatar. */
 622                         return;
 623                 }
 624
 625                 avatar = conv;
 626         }
 627
 628         tp_clear_pointer (&self->priv->avatar, empathy_avatar_unref);
 629         self->priv->avatar = avatar;
 630
 631         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 632         image = gtk_image_new_from_pixbuf (pixbuf_view);
 633
 634         gtk_button_set_image (GTK_BUTTON (self), image);
 635         g_signal_emit (self, signals[CHANGED], 0);
 636
 637         g_object_unref (pixbuf_view);
 638         g_object_unref (pixbuf);
 639 }
 640
 641 static void
 642 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *self,
 643                                     gchar                *data,
 644                                     gsize                 size,
 645                                     gboolean              set_locally)
 646 {
 647         GdkPixbuf     *pixbuf;
 648         EmpathyAvatar *avatar = NULL;
 649         gchar         *mime_type = NULL;
 650
 651         if (data == NULL) {
 652                 avatar_chooser_clear_image (self);
 653                 return;
 654         }
 655
 656         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 657         if (pixbuf == NULL) {
 658                 g_free (data);
 659                 data = NULL;
 660                 return;
 661         }
 662
 663         /* avatar takes ownership of data and mime_type */
 664         avatar = empathy_avatar_new ((guchar *) data, size, mime_type, NULL);
 665
 666         avatar_chooser_set_image (self, avatar, pixbuf, set_locally);
 667 }
 668
 669 static void
 670 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 671                                      GdkDragContext     *context,
 672                                      gint                x,
 673                                      gint                y,
 674                                      GtkSelectionData   *selection_data,
 675                                      guint               info,
 676                                      guint               time_,
 677                                      EmpathyAvatarChooser *self)
 678 {
 679         gchar    *target_type;
 680         gboolean  handled = FALSE;
 681
 682         target_type = gdk_atom_name (gtk_selection_data_get_target (selection_data));
 683         if (!strcmp (target_type, URI_LIST_TYPE)) {
 684                 GFile            *file;
 685                 gchar            *nl;
 686                 gchar            *data = NULL;
 687                 gsize             bytes_read;
 688
 689                 nl = strstr ((gchar *) gtk_selection_data_get_data (selection_data),
 690                                                 "\r\n");
 691                 if (nl) {
 692                         gchar *uri;
 693
 694                         uri = g_strndup ((gchar *) gtk_selection_data_get_data (selection_data),
 695                                          nl - (gchar *) gtk_selection_data_get_data (selection_data));
 696
 697                         file = g_file_new_for_uri (uri);
 698                         g_free (uri);
 699                 } else {
 700                         file = g_file_new_for_uri ((gchar *) gtk_selection_data_get_data (
 701                                                 selection_data));
 702                 }
 703
 704                 handled = g_file_load_contents (file, NULL, &data, &bytes_read,
 705                                                 NULL, NULL);
 706
 707                 if (handled) {
 708                         /* this in turn calls empathy_avatar_new (), which assumes
 709                          * ownership of data.
 710                          */
 711                         avatar_chooser_set_image_from_data (self, data,
 712                                                             bytes_read,
 713                                                             TRUE);
 714                 }
 715
 716                 g_object_unref (file);
 717         }
 718
 719         gtk_drag_finish (context, handled, FALSE, time_);
 720 }
 721
 722 static void
 723 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 724                                   EmpathyAvatarChooser *self)
 725 {
 726         gchar *filename;
 727
 728         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 729
 730         if (filename) {
 731                 GtkWidget *image;
 732                 GdkPixbuf *pixbuf = NULL;
 733                 GdkPixbuf *scaled_pixbuf;
 734
 735                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 736
 737                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 738
 739                 if (pixbuf) {
 740                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 741                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 742                         g_object_unref (scaled_pixbuf);
 743                         g_object_unref (pixbuf);
 744                 } else {
 745                         gtk_image_set_from_stock (GTK_IMAGE (image),
 746                                                   "gtk-dialog-question",
 747                                                   GTK_ICON_SIZE_DIALOG);
 748                 }
 749
 750                 g_free (filename);
 751         }
 752
 753         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 754 }
 755
 756 static void
 757 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *self,
 758                                     const gchar          *filename)
 759 {
 760         gchar  *image_data = NULL;
 761         gsize   image_size = 0;
 762         GError *error = NULL;
 763
 764         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 765                 DEBUG ("Failed to load image from '%s': %s", filename,
 766                         error ? error->message : "No error given");
 767
 768                 g_clear_error (&error);
 769                 return;
 770         }
 771
 772         avatar_chooser_set_image_from_data (self, image_data, image_size, TRUE);
 773 }
 774
 775 #ifdef HAVE_CHEESE
 776 static void
 777 avatar_chooser_set_avatar_from_pixbuf (EmpathyAvatarChooser *self,
 778                                        GdkPixbuf            *pb)
 779 {
 780         /* dup the string as empathy_avatar_new steals ownership of the it */
 781         gchar         *mime = g_strdup ("image/png");
 782         gsize          size;
 783         gchar         *buf;
 784         EmpathyAvatar *avatar = NULL;
 785         GError        *error = NULL;
 786         if (!gdk_pixbuf_save_to_buffer (pb, &buf, &size, "png", &error, NULL)) {
 787                 avatar_chooser_error_show (self,
 788                         _("Couldn't save pixbuf to png"),
 789                         error ? error->message : NULL);
 790                 g_clear_error (&error);
 791                 return;
 792         }
 793         avatar = empathy_avatar_new ((guchar *) buf, size, mime, NULL);
 794         avatar_chooser_set_image (self, avatar, pb, TRUE);
 795 }
 796
 797 static gboolean
 798 destroy_chooser (GtkWidget *self)
 799 {
 800         gtk_widget_destroy (self);
 801         return FALSE;
 802 }
 803
 804 static void
 805 webcam_response_cb (GtkDialog            *dialog,
 806                     int                   response,
 807                     EmpathyAvatarChooser *self)
 808 {
 809         if (response == GTK_RESPONSE_ACCEPT) {
 810                 GdkPixbuf           *pb;
 811                 CheeseAvatarChooser *cheese_chooser;
 812
 813                 cheese_chooser = CHEESE_AVATAR_CHOOSER (dialog);
 814                 pb = cheese_avatar_chooser_get_picture (cheese_chooser);
 815                 avatar_chooser_set_avatar_from_pixbuf (self, pb);
 816         }
 817         if (response != GTK_RESPONSE_DELETE_EVENT &&
 818             response != GTK_RESPONSE_NONE)
 819                 g_idle_add ((GSourceFunc) destroy_chooser, dialog);
 820 }
 821
 822 static void
 823 choose_avatar_from_webcam (GtkWidget            *widget,
 824                            EmpathyAvatarChooser *self)
 825 {
 826         GtkWidget *window;
 827
 828         window = cheese_avatar_chooser_new ();
 829
 830         gtk_window_set_transient_for (GTK_WINDOW (window),
 831                                       GTK_WINDOW (empathy_get_toplevel_window (GTK_WIDGET (self))));
 832         gtk_window_set_modal (GTK_WINDOW (window), TRUE);
 833         g_signal_connect (G_OBJECT (window), "response",
 834                           G_CALLBACK (webcam_response_cb), self);
 835         gtk_widget_show (window);
 836 }
 837 #endif /* HAVE_CHEESE */
 838
 839 static void
 840 avatar_chooser_response_cb (GtkWidget            *widget,
 841                             gint                  response,
 842                             EmpathyAvatarChooser *self)
 843 {
 844         self->priv->chooser_dialog = NULL;
 845
 846         if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE) {
 847                 gchar *filename;
 848                 gchar *path;
 849
 850                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 851                 avatar_chooser_set_image_from_file (self, filename);
 852                 g_free (filename);
 853
 854                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 855                 if (path) {
 856                         g_settings_set_string (self->priv->gsettings_ui,
 857                                                EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 858                                                path);
 859
 860                         g_free (path);
 861                 }
 862         }
 863         else if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE) {
 864                 /* This corresponds to "No Image", not to "Cancel" */
 865                 avatar_chooser_clear_image (self);
 866         }
 867         #ifdef HAVE_CHEESE
 868         else if (response == EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM) {
 869                 /* This corresponds to "Camera Picture" */
 870                 choose_avatar_from_webcam (widget, self);
 871         }
 872         #endif
 873         gtk_widget_destroy (widget);
 874 }
 875
 876 static void
 877 avatar_chooser_clicked_cb (GtkWidget            *button,
 878                            EmpathyAvatarChooser *self)
 879 {
 880         GtkFileChooser *chooser_dialog;
 881         GtkWidget      *image;
 882         gchar          *saved_dir = NULL;
 883         const gchar    *default_dir = DEFAULT_DIR;
 884         const gchar    *pics_dir;
 885         GtkFileFilter  *filter;
 886
 887         if (self->priv->chooser_dialog) {
 888                 gtk_window_present (GTK_WINDOW (self->priv->chooser_dialog));
 889                 return;
 890         }
 891
 892         self->priv->chooser_dialog = GTK_FILE_CHOOSER (
 893                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 894                                              empathy_get_toplevel_window (GTK_WIDGET (self)),
 895                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 896                                              #ifdef HAVE_CHEESE
 897                                              _("Take a picture..."),
 898                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_WEBCAM,
 899                                              #endif
 900                                              _("No Image"),
 901                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_NO_IMAGE,
 902                                              GTK_STOCK_CANCEL,
 903                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_CANCEL,
 904                                              GTK_STOCK_OPEN,
 905                                              EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE,
 906                                              NULL));
 907         chooser_dialog = self->priv->chooser_dialog;
 908         gtk_window_set_destroy_with_parent (GTK_WINDOW (chooser_dialog), TRUE);
 909
 910         /* Get special dirs */
 911         saved_dir = g_settings_get_string (self->priv->gsettings_ui,
 912                                            EMPATHY_PREFS_UI_AVATAR_DIRECTORY);
 913
 914         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 915                 g_free (saved_dir);
 916                 saved_dir = NULL;
 917         }
 918         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 919                 default_dir = NULL;
 920         }
 921         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 922         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 923                 pics_dir = NULL;
 924         }
 925
 926         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 927         if (saved_dir) {
 928                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 929         }
 930         else if (pics_dir) {
 931                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 932         }
 933         else if (default_dir) {
 934                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 935         } else {
 936                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 937         }
 938
 939         /* Add shortcuts to special dirs */
 940         if (saved_dir) {
 941                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 942         }
 943         else if (pics_dir) {
 944                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 945         }
 946         if (default_dir) {
 947                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 948         }
 949
 950         /* Setup preview image */
 951         image = gtk_image_new ();
 952         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 953         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 954         gtk_widget_show (image);
 955         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 956         g_signal_connect (chooser_dialog, "update-preview",
 957                           G_CALLBACK (avatar_chooser_update_preview_cb),
 958                           self);
 959
 960         /* Setup filers */
 961         filter = gtk_file_filter_new ();
 962         gtk_file_filter_set_name (filter, _("Images"));
 963         gtk_file_filter_add_pixbuf_formats (filter);
 964         gtk_file_chooser_add_filter (chooser_dialog, filter);
 965         filter = gtk_file_filter_new ();
 966         gtk_file_filter_set_name (filter, _("All Files"));
 967         gtk_file_filter_add_pattern (filter, "*");
 968         gtk_file_chooser_add_filter (chooser_dialog, filter);
 969
 970         /* Setup response */
 971         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), EMPATHY_AVATAR_CHOOSER_RESPONSE_FILE);
 972         g_signal_connect (chooser_dialog, "response",
 973                           G_CALLBACK (avatar_chooser_response_cb),
 974                           self);
 975
 976         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 977
 978         g_free (saved_dir);
 979 }
 980
 981 static void
 982 empathy_avatar_chooser_init (EmpathyAvatarChooser *self)
 983 {
 984         self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
 985                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPrivate);
 986
 987         gtk_drag_dest_set (GTK_WIDGET (self),
 988                            GTK_DEST_DEFAULT_ALL,
 989                            drop_types,
 990                            G_N_ELEMENTS (drop_types),
 991                            GDK_ACTION_COPY);
 992
 993         self->priv->gsettings_ui = g_settings_new (EMPATHY_PREFS_UI_SCHEMA);
 994
 995         g_signal_connect (self, "drag-motion",
 996                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 997                           self);
 998         g_signal_connect (self, "drag-leave",
 999                           G_CALLBACK (avatar_chooser_drag_leave_cb),
1000                           self);
1001         g_signal_connect (self, "drag-drop",
1002                           G_CALLBACK (avatar_chooser_drag_drop_cb),
1003                           self);
1004         g_signal_connect (self, "drag-data-received",
1005                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
1006                           self);
1007         g_signal_connect (self, "clicked",
1008                           G_CALLBACK (avatar_chooser_clicked_cb),
1009                           self);
1010
1011         empathy_avatar_chooser_set (self, NULL);
1012 }
1013
1014 static void
1015 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *self,
1016                                       EmpathyAvatar        *avatar,
1017                                       gboolean              set_locally)
1018 {
1019         GdkPixbuf *pixbuf;
1020         gchar     *mime_type = NULL;
1021
1022         g_assert (avatar != NULL);
1023
1024         pixbuf = empathy_pixbuf_from_data_and_mime ((gchar *) avatar->data,
1025                                                     avatar->len,
1026                                                     &mime_type);
1027         if (pixbuf == NULL) {
1028                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
1029                 return;
1030         }
1031
1032         if (avatar->format == NULL) {
1033                 avatar->format = mime_type;
1034         } else {
1035                 if (strcmp (mime_type, avatar->format)) {
1036                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
1037                                 avatar->format, mime_type);
1038                 }
1039                 g_free (mime_type);
1040         }
1041
1042         empathy_avatar_ref (avatar);
1043
1044         avatar_chooser_set_image (self, avatar, pixbuf, set_locally);
1045 }
1046
1047 /**
1048  * empathy_avatar_chooser_new:
1049  *
1050  * Creates a new #EmpathyAvatarChooser.
1051  *
1052  * Return value: a new #EmpathyAvatarChooser
1053  */
1054 GtkWidget *
1055 empathy_avatar_chooser_new (void)
1056 {
1057         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
1058 }
1059
1060 /**
1061  * empathy_avatar_chooser_set:
1062  * @self: an #EmpathyAvatarChooser
1063  * @avatar: a new #EmpathyAvatar
1064  *
1065  * Sets the @self to display the avatar indicated by @avatar.
1066  */
1067 void
1068 empathy_avatar_chooser_set (EmpathyAvatarChooser *self,
1069                             EmpathyAvatar        *avatar)
1070 {
1071         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (self));
1072
1073         if (avatar != NULL) {
1074                 avatar_chooser_set_image_from_avatar (self, avatar, FALSE);
1075         } else {
1076                 avatar_chooser_clear_image (self);
1077         }
1078 }
1079
1080 /**
1081  * empathy_avatar_chooser_get_image_data:
1082  * @self: an #EmpathyAvatarChooser
1083  * @data: avatar bytes
1084  * @data_size: size of @data
1085  * @mime_type: avatar mime-type
1086  *
1087  * Gets image data about the currently selected avatar.
1088  */
1089 void
1090 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *self,
1091                                        const gchar          **data,
1092                                        gsize                 *data_size,
1093                                        const gchar          **mime_type)
1094 {
1095         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (self));
1096
1097         if (self->priv->avatar != NULL) {
1098                 if (data != NULL) {
1099                         *data = (gchar *) self->priv->avatar->data;
1100                 }
1101                 if (data_size != NULL) {
1102                         *data_size = self->priv->avatar->len;
1103                 }
1104                 if (mime_type != NULL) {
1105                         *mime_type = self->priv->avatar->format;
1106                 }
1107         } else {
1108                 if (data != NULL) {
1109                         *data = NULL;
1110                 }
1111                 if (data_size != NULL) {
1112                         *data_size = 0;
1113                 }
1114                 if (mime_type != NULL) {
1115                         *mime_type = NULL;
1116                 }
1117         }
1118 }
1119
1120 void
1121 empathy_avatar_chooser_set_account (EmpathyAvatarChooser *self,
1122                                        TpAccount *account)
1123 {
1124         g_return_if_fail (account != NULL);
1125
1126         avatar_chooser_set_connection (self, tp_account_get_connection (account));
1127         g_object_notify (G_OBJECT (self), "connection");
1128 }