libempathy-gtk/empathy-avatar-chooser.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2006-2007 Imendio AB.
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Authors: Based on Novell's e-image-chooser.
  21  *          Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <string.h>
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-utils.h>
  33 #include <libempathy/empathy-contact-factory.h>
  34
  35 #include "empathy-avatar-chooser.h"
  36 #include "empathy-conf.h"
  37 #include "empathy-ui-utils.h"
  38
  39 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  40 #include <libempathy/empathy-debug.h>
  41
  42 #define AVATAR_SIZE_SAVE 96
  43 #define AVATAR_SIZE_VIEW 64
  44 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  45
  46 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  47 typedef struct {
  48         EmpathyContactFactory   *contact_factory;
  49         McAccount               *account;
  50         EmpathyTpContactFactory *tp_contact_factory;
  51
  52         gulong ready_handler_id;
  53
  54         EmpathyAvatar *avatar;
  55 } EmpathyAvatarChooserPriv;
  56
  57 static void       avatar_chooser_finalize              (GObject              *object);
  58 static void       avatar_chooser_set_account           (EmpathyAvatarChooser *self,
  59                                                         McAccount            *account);
  60 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *chooser,
  61                                                         EmpathyAvatar        *avatar,
  62                                                         GdkPixbuf            *pixbuf,
  63                                                         gboolean              set_locally);
  64 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  65                                                         GdkDragContext       *context,
  66                                                         gint                  x,
  67                                                         gint                  y,
  68                                                         guint                 time,
  69                                                         EmpathyAvatarChooser *chooser);
  70 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  71                                                         GdkDragContext       *context,
  72                                                         guint                 time,
  73                                                         EmpathyAvatarChooser *chooser);
  74 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  75                                                         GdkDragContext       *context,
  76                                                         gint                  x,
  77                                                         gint                  y,
  78                                                         guint                 time,
  79                                                         EmpathyAvatarChooser *chooser);
  80 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  81                                                         GdkDragContext       *context,
  82                                                         gint                  x,
  83                                                         gint                  y,
  84                                                         GtkSelectionData     *selection_data,
  85                                                         guint                 info,
  86                                                         guint                 time,
  87                                                         EmpathyAvatarChooser *chooser);
  88 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  89                                                         EmpathyAvatarChooser *chooser);
  90
  91 enum {
  92         CHANGED,
  93         LAST_SIGNAL
  94 };
  95
  96 enum {
  97         PROP_0,
  98         PROP_ACCOUNT
  99 };
 100
 101 static guint signals [LAST_SIGNAL];
 102
 103 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 104
 105 /*
 106  * Drag and drop stuff
 107  */
 108 #define URI_LIST_TYPE "text/uri-list"
 109
 110 enum DndTargetType {
 111         DND_TARGET_TYPE_URI_LIST
 112 };
 113
 114 static const GtkTargetEntry drop_types[] = {
 115         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 116 };
 117
 118 static void
 119 avatar_chooser_get_property (GObject    *object,
 120                              guint       param_id,
 121                              GValue     *value,
 122                              GParamSpec *pspec)
 123 {
 124         EmpathyAvatarChooserPriv *priv = GET_PRIV (object);
 125
 126         switch (param_id) {
 127         case PROP_ACCOUNT:
 128                 g_value_set_object (value, priv->account);
 129                 break;
 130         default:
 131                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 132                 break;
 133         }
 134 }
 135
 136 static void
 137 avatar_chooser_set_property (GObject      *object,
 138                              guint         param_id,
 139                              const GValue *value,
 140                              GParamSpec   *pspec)
 141 {
 142         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 143
 144         switch (param_id) {
 145         case PROP_ACCOUNT:
 146                 avatar_chooser_set_account (self, g_value_get_object (value));
 147                 break;
 148         default:
 149                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 150                 break;
 151         }
 152 }
 153
 154 static void
 155 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 156 {
 157         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 158         GParamSpec *param_spec;
 159
 160         object_class->finalize = avatar_chooser_finalize;
 161         object_class->get_property = avatar_chooser_get_property;
 162         object_class->set_property = avatar_chooser_set_property;
 163
 164         signals[CHANGED] =
 165                 g_signal_new ("changed",
 166                               G_TYPE_FROM_CLASS (klass),
 167                               G_SIGNAL_RUN_LAST,
 168                               0,
 169                               NULL, NULL,
 170                               g_cclosure_marshal_VOID__VOID,
 171                               G_TYPE_NONE, 0);
 172
 173         param_spec = g_param_spec_object ("account",
 174                                           "McAccount",
 175                                           "McAccount whose avatar should be "
 176                                           "shown and modified by this widget",
 177                                           MC_TYPE_ACCOUNT,
 178                                           G_PARAM_READWRITE |
 179                                           G_PARAM_STATIC_STRINGS);
 180         g_object_class_install_property (object_class,
 181                                          PROP_ACCOUNT,
 182                                          param_spec);
 183
 184         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 185 }
 186
 187 static void
 188 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 189 {
 190         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 191                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 192
 193         chooser->priv = priv;
 194         gtk_drag_dest_set (GTK_WIDGET (chooser),
 195                            GTK_DEST_DEFAULT_ALL,
 196                            drop_types,
 197                            G_N_ELEMENTS (drop_types),
 198                            GDK_ACTION_COPY);
 199
 200         g_signal_connect (chooser, "drag-motion",
 201                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 202                           chooser);
 203         g_signal_connect (chooser, "drag-leave",
 204                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 205                           chooser);
 206         g_signal_connect (chooser, "drag-drop",
 207                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 208                           chooser);
 209         g_signal_connect (chooser, "drag-data-received",
 210                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 211                           chooser);
 212         g_signal_connect (chooser, "clicked",
 213                           G_CALLBACK (avatar_chooser_clicked_cb),
 214                           chooser);
 215
 216         priv->contact_factory = empathy_contact_factory_new ();
 217
 218         empathy_avatar_chooser_set (chooser, NULL);
 219 }
 220
 221 static void
 222 avatar_chooser_finalize (GObject *object)
 223 {
 224         EmpathyAvatarChooserPriv *priv;
 225
 226         priv = GET_PRIV (object);
 227
 228         avatar_chooser_set_account (EMPATHY_AVATAR_CHOOSER (object), NULL);
 229         g_assert (priv->account == NULL);
 230         g_assert (priv->tp_contact_factory == NULL);
 231
 232         g_object_unref (priv->contact_factory);
 233
 234         if (priv->avatar != NULL) {
 235                 empathy_avatar_unref (priv->avatar);
 236         }
 237
 238         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 239 }
 240
 241 static void
 242 avatar_chooser_tp_cf_ready_cb (EmpathyTpContactFactory *tp_cf,
 243                                GParamSpec              *unused,
 244                                EmpathyAvatarChooser    *self)
 245 {
 246         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 247         gboolean ready;
 248
 249         /* sanity check that we're listening on the right ETpCF */
 250         g_assert (priv->tp_contact_factory == tp_cf);
 251
 252         ready = empathy_tp_contact_factory_is_ready (tp_cf);
 253         gtk_widget_set_sensitive (GTK_WIDGET (self), ready);
 254 }
 255
 256 static void
 257 avatar_chooser_set_account (EmpathyAvatarChooser *self,
 258                             McAccount            *account)
 259 {
 260         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 261
 262         if (priv->account != NULL) {
 263                 g_object_unref (priv->account);
 264                 priv->account = NULL;
 265
 266                 g_assert (priv->tp_contact_factory != NULL);
 267
 268                 g_signal_handler_disconnect (priv->tp_contact_factory,
 269                         priv->ready_handler_id);
 270                 priv->ready_handler_id = 0;
 271
 272                 g_object_unref (priv->tp_contact_factory);
 273                 priv->tp_contact_factory = NULL;
 274         }
 275
 276         if (account != NULL) {
 277                 priv->account = g_object_ref (account);
 278                 priv->tp_contact_factory = g_object_ref (
 279                         empathy_contact_factory_get_tp_factory (
 280                                 priv->contact_factory, priv->account));
 281
 282                 priv->ready_handler_id = g_signal_connect (
 283                         priv->tp_contact_factory, "notify::ready",
 284                         G_CALLBACK (avatar_chooser_tp_cf_ready_cb), self);
 285                 avatar_chooser_tp_cf_ready_cb (priv->tp_contact_factory, NULL,
 286                         self);
 287         }
 288 }
 289
 290 static void
 291 avatar_chooser_error_show (EmpathyAvatarChooser *chooser,
 292                            const gchar          *primary_text,
 293                            const gchar          *secondary_text)
 294 {
 295         GtkWidget *parent;
 296         GtkWidget *dialog;
 297
 298         parent = gtk_widget_get_toplevel (GTK_WIDGET (chooser));
 299         if (!GTK_IS_WINDOW (parent)) {
 300                 parent = NULL;
 301         }
 302
 303         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 304                                          GTK_DIALOG_MODAL,
 305                                          GTK_MESSAGE_WARNING,
 306                                          GTK_BUTTONS_CLOSE,
 307                                          "%s", primary_text);
 308
 309         if (secondary_text != NULL) {
 310                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 311                                                           "%s", secondary_text);
 312         }
 313
 314         g_signal_connect (dialog, "response",
 315                           G_CALLBACK (gtk_widget_destroy), NULL);
 316         gtk_widget_show (dialog);
 317
 318 }
 319
 320 static gboolean
 321 str_in_strv (const gchar  *str,
 322              gchar **strv)
 323 {
 324         if (strv == NULL) {
 325                 return FALSE;
 326         }
 327
 328         while (*strv != NULL) {
 329                 if (g_str_equal (str, *strv)) {
 330                         return TRUE;
 331                 }
 332                 strv++;
 333         }
 334         return FALSE;
 335 }
 336
 337 /* The caller must free the strings stored in satisfactory_format_name and
 338  * satisfactory_mime_type.
 339  */
 340 static gboolean
 341 avatar_chooser_need_mime_type_conversion (const gchar *current_mime_type,
 342                                           gchar      **accepted_mime_types,
 343                                           gchar      **satisfactory_format_name,
 344                                           gchar      **satisfactory_mime_type)
 345 {
 346         gchar   *good_mime_types[] = {"image/jpeg", "image/png", NULL};
 347         guint    i;
 348         GSList  *formats, *l;
 349         gboolean found = FALSE;
 350
 351         *satisfactory_format_name = NULL;
 352         *satisfactory_mime_type = NULL;
 353
 354         /* If there is no accepted format there is nothing we can do */
 355         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 356                 return TRUE;
 357         }
 358
 359         /* If the current mime type is good and accepted, don't change it!
 360          * jpeg is compress better pictures, but png is better for logos and
 361          * could have an alpha layer. */
 362         if (str_in_strv (current_mime_type, good_mime_types) &&
 363             str_in_strv (current_mime_type, accepted_mime_types)) {
 364                 *satisfactory_mime_type = g_strdup (current_mime_type);
 365                 *satisfactory_format_name = g_strdup (current_mime_type +
 366                                                       strlen ("image/"));
 367                 return FALSE;
 368         }
 369
 370         /* The current mime type is either not accepted or not good to use.
 371          * Check if one of the good format is supported... */
 372         for (i = 0; good_mime_types[i] != NULL;  i++) {
 373                 if (str_in_strv (good_mime_types[i], accepted_mime_types)) {
 374                         *satisfactory_mime_type = g_strdup (good_mime_types[i]);
 375                         *satisfactory_format_name = g_strdup (good_mime_types[i] +
 376                                                               strlen ("image/"));
 377                         return TRUE;
 378                 }
 379         }
 380
 381         /* Pick the first supported format we can write */
 382         formats = gdk_pixbuf_get_formats ();
 383         for (l = formats; !found && l != NULL; l = l->next) {
 384                 GdkPixbufFormat *format = l->data;
 385                 gchar **format_mime_types;
 386                 gchar **iter;
 387
 388                 if (!gdk_pixbuf_format_is_writable (format)) {
 389                         continue;
 390                 }
 391
 392                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 393                 for (iter = format_mime_types; *iter != NULL; iter++) {
 394                         if (str_in_strv (*iter, accepted_mime_types)) {
 395                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 396                                 *satisfactory_mime_type = g_strdup (*iter);
 397                                 found = TRUE;
 398                                 break;
 399                         }
 400                 }
 401                 g_strfreev (format_mime_types);
 402         }
 403         g_slist_free (formats);
 404
 405         return TRUE;
 406 }
 407
 408 static EmpathyAvatar *
 409 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 410                                         GdkPixbuf            *pixbuf,
 411                                         EmpathyAvatar        *avatar)
 412 {
 413         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 414         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 415         guint                     max_width = 0, max_height = 0, max_size = 0;
 416         gchar                   **mime_types = NULL;
 417         gboolean                  needs_conversion = FALSE;
 418         gint                      width, height;
 419         gchar                    *new_format_name = NULL;
 420         gchar                    *new_mime_type = NULL;
 421         gdouble                   min_factor, max_factor;
 422         gdouble                   factor;
 423         gchar                    *converted_image_data = NULL;
 424         gsize                     converted_image_size = 0;
 425
 426         /* This should only be called if the user is setting a new avatar,
 427          * which should only be allowed once the avatar requirements have been
 428          * discovered.
 429          */
 430         g_return_val_if_fail (tp_cf != NULL, NULL);
 431         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 432                 NULL);
 433
 434         g_object_get (tp_cf,
 435                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 436                 "avatar-max-width", &max_width,
 437                 "avatar-max-height", &max_height,
 438                 "avatar-max-size", &max_size,
 439                 NULL);
 440
 441         /* Smaller is the factor, smaller will be the image.
 442          * 0 is an empty image, 1 is the full size. */
 443         min_factor = 0;
 444         max_factor = 1;
 445         factor = 1;
 446
 447         /* Check if we need to convert to another image format */
 448         if (avatar_chooser_need_mime_type_conversion (avatar->format,
 449                                                       mime_types,
 450                                                       &new_format_name,
 451                                                       &new_mime_type)) {
 452                 DEBUG ("Format conversion needed, we'll use mime type '%s' "
 453                        "and format name '%s'. Current mime type is '%s'",
 454                        new_mime_type, new_format_name, avatar->format);
 455                 needs_conversion = TRUE;
 456         }
 457         g_strfreev (mime_types);
 458
 459         /* If there is no format we can use, report error to the user. */
 460         if (new_mime_type == NULL || new_format_name == NULL) {
 461                 avatar_chooser_error_show (chooser, _("Couldn't convert image"),
 462                                 _("None of the accepted image formats is "
 463                                   "supported on your system"));
 464                 return NULL;
 465         }
 466
 467         /* If width or height are too big, it needs converting. */
 468         width = gdk_pixbuf_get_width (pixbuf);
 469         height = gdk_pixbuf_get_height (pixbuf);
 470         if ((max_width > 0 && width > max_width) ||
 471             (max_height > 0 && height > max_height)) {
 472                 gdouble h_factor, v_factor;
 473
 474                 h_factor = (gdouble) max_width / width;
 475                 v_factor = (gdouble) max_height / height;
 476                 factor = max_factor = MIN (h_factor, v_factor);
 477
 478                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 479                        width, height, max_width, max_height);
 480
 481                 needs_conversion = TRUE;
 482         }
 483
 484         /* If the data len is too big and no other conversion is needed,
 485          * try with a lower factor. */
 486         if (max_size > 0 && avatar->len > max_size && !needs_conversion) {
 487                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 488                        "(max is %u bytes), conversion needed.",
 489                        avatar->len, max_size);
 490
 491                 factor = 0.5;
 492                 needs_conversion = TRUE;
 493         }
 494
 495         /* If no conversion is needed, return the avatar */
 496         if (!needs_conversion) {
 497                 g_free (new_format_name);
 498                 g_free (new_mime_type);
 499                 return empathy_avatar_ref (avatar);
 500         }
 501
 502         do {
 503                 GdkPixbuf *pixbuf_scaled = NULL;
 504                 gboolean   saved;
 505                 gint       new_width, new_height;
 506                 GError    *error = NULL;
 507
 508                 g_free (converted_image_data);
 509
 510                 if (factor != 1) {
 511                         new_width = width * factor;
 512                         new_height = height * factor;
 513                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 514                                                                  new_width,
 515                                                                  new_height,
 516                                                                  GDK_INTERP_HYPER);
 517                 } else {
 518                         new_width = width;
 519                         new_height = height;
 520                         pixbuf_scaled = g_object_ref (pixbuf);
 521                 }
 522
 523                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 524                         new_width, new_height, new_format_name);
 525
 526                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 527                                                    &converted_image_data,
 528                                                    &converted_image_size,
 529                                                    new_format_name,
 530                                                    &error, NULL);
 531
 532                 if (!saved) {
 533                         g_free (new_format_name);
 534                         g_free (new_mime_type);
 535                         avatar_chooser_error_show (chooser,
 536                                 _("Couldn't convert image"),
 537                                 error ? error->message : NULL);
 538                         g_clear_error (&error);
 539                         return NULL;
 540                 }
 541
 542                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 543                         converted_image_size);
 544
 545                 if (max_size == 0)
 546                         break;
 547
 548                 /* Make a binary search for the bigest factor that produce
 549                  * an image data size less than max_size */
 550                 if (converted_image_size > max_size)
 551                         max_factor = factor;
 552                 if (converted_image_size < max_size)
 553                         min_factor = factor;
 554                 factor = (min_factor + max_factor)/2;
 555
 556                 /* We are done if either:
 557                  * - min_factor == max_factor. That happens if we resized to
 558                  *   the max required dimension and the produced data size is
 559                  *   less than max_size.
 560                  * - The data size is close enough to max_size. Here we accept
 561                  *   a difference of 1k.
 562                  */
 563         } while (min_factor != max_factor &&
 564                  ABS (max_size - converted_image_size) > 1024);
 565         g_free (new_format_name);
 566
 567         /* Takes ownership of new_mime_type and converted_image_data */
 568         avatar = empathy_avatar_new (converted_image_data,
 569                 converted_image_size, new_mime_type, NULL);
 570
 571         return avatar;
 572 }
 573
 574 static void
 575 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 576 {
 577         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 578         GtkWidget *image;
 579
 580         if (priv->avatar == NULL) {
 581                 return;
 582         }
 583
 584         empathy_avatar_unref (priv->avatar);
 585         priv->avatar = NULL;
 586
 587         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 588         gtk_button_set_image (GTK_BUTTON (chooser), image);
 589         g_signal_emit (chooser, signals[CHANGED], 0);
 590 }
 591
 592 static void
 593 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 594                                     gchar                *data,
 595                                     gsize                 size,
 596                                     gboolean              set_locally)
 597 {
 598         GdkPixbuf     *pixbuf;
 599         EmpathyAvatar *avatar = NULL;
 600         gchar         *mime_type = NULL;
 601
 602         if (data == NULL) {
 603                 avatar_chooser_clear_image (chooser);
 604                 return;
 605         }
 606
 607         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 608         if (pixbuf == NULL) {
 609                 g_free (data);
 610                 return;
 611         }
 612
 613         /* avatar takes ownership of data and mime_type */
 614         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 615
 616         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 617 }
 618
 619 static void
 620 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 621                                       EmpathyAvatar        *avatar,
 622                                       gboolean              set_locally)
 623 {
 624         GdkPixbuf *pixbuf;
 625         gchar     *mime_type = NULL;
 626
 627         g_assert (avatar != NULL);
 628
 629         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 630                                                     avatar->len,
 631                                                     &mime_type);
 632         if (pixbuf == NULL) {
 633                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 634                 return;
 635         }
 636
 637         if (avatar->format == NULL) {
 638                 avatar->format = mime_type;
 639         } else {
 640                 if (strcmp (mime_type, avatar->format)) {
 641                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 642                                 avatar->format, mime_type);
 643                 }
 644                 g_free (mime_type);
 645         }
 646
 647         empathy_avatar_ref (avatar);
 648
 649         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 650 }
 651
 652 static void
 653 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 654                           EmpathyAvatar        *avatar,
 655                           GdkPixbuf            *pixbuf,
 656                           gboolean              set_locally)
 657 {
 658         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 659         GdkPixbuf                *pixbuf_view;
 660         GtkWidget                *image;
 661
 662         g_assert (avatar != NULL);
 663         g_assert (pixbuf != NULL);
 664
 665         if (set_locally) {
 666                 EmpathyAvatar *conv;
 667
 668                 conv = avatar_chooser_maybe_convert_and_scale (chooser,
 669                         pixbuf, avatar);
 670                 empathy_avatar_unref (avatar);
 671
 672                 if (conv == NULL) {
 673                         /* An error occured; don't change the avatar. */
 674                         return;
 675                 }
 676
 677                 avatar = conv;
 678         }
 679
 680         if (priv->avatar != NULL) {
 681                 empathy_avatar_unref (priv->avatar);
 682         }
 683         priv->avatar = avatar;
 684
 685         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 686         image = gtk_image_new_from_pixbuf (pixbuf_view);
 687
 688         gtk_button_set_image (GTK_BUTTON (chooser), image);
 689         g_signal_emit (chooser, signals[CHANGED], 0);
 690
 691         g_object_unref (pixbuf_view);
 692         g_object_unref (pixbuf);
 693 }
 694
 695 static void
 696 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 697                                     const gchar          *filename)
 698 {
 699         gchar  *image_data = NULL;
 700         gsize   image_size = 0;
 701         GError *error = NULL;
 702
 703         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 704                 DEBUG ("Failed to load image from '%s': %s", filename,
 705                         error ? error->message : "No error given");
 706
 707                 g_clear_error (&error);
 708                 return;
 709         }
 710
 711         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 712 }
 713
 714 static gboolean
 715 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 716                               GdkDragContext     *context,
 717                               gint                x,
 718                               gint                y,
 719                               guint               time,
 720                               EmpathyAvatarChooser *chooser)
 721 {
 722         EmpathyAvatarChooserPriv *priv;
 723         GList                  *p;
 724
 725         priv = GET_PRIV (chooser);
 726
 727         for (p = context->targets; p != NULL; p = p->next) {
 728                 gchar *possible_type;
 729
 730                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 731
 732                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 733                         g_free (possible_type);
 734                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 735
 736                         return TRUE;
 737                 }
 738
 739                 g_free (possible_type);
 740         }
 741
 742         return FALSE;
 743 }
 744
 745 static void
 746 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 747                              GdkDragContext     *context,
 748                              guint               time,
 749                              EmpathyAvatarChooser *chooser)
 750 {
 751 }
 752
 753 static gboolean
 754 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 755                             GdkDragContext     *context,
 756                             gint                x,
 757                             gint                y,
 758                             guint               time,
 759                             EmpathyAvatarChooser *chooser)
 760 {
 761         EmpathyAvatarChooserPriv *priv;
 762         GList                  *p;
 763
 764         priv = GET_PRIV (chooser);
 765
 766         if (context->targets == NULL) {
 767                 return FALSE;
 768         }
 769
 770         for (p = context->targets; p != NULL; p = p->next) {
 771                 char *possible_type;
 772
 773                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 774                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 775                         g_free (possible_type);
 776                         gtk_drag_get_data (widget, context,
 777                                            GDK_POINTER_TO_ATOM (p->data),
 778                                            time);
 779
 780                         return TRUE;
 781                 }
 782
 783                 g_free (possible_type);
 784         }
 785
 786         return FALSE;
 787 }
 788
 789 static void
 790 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 791                                      GdkDragContext     *context,
 792                                      gint                x,
 793                                      gint                y,
 794                                      GtkSelectionData   *selection_data,
 795                                      guint               info,
 796                                      guint               time,
 797                                      EmpathyAvatarChooser *chooser)
 798 {
 799         gchar    *target_type;
 800         gboolean  handled = FALSE;
 801
 802         target_type = gdk_atom_name (selection_data->target);
 803         if (!strcmp (target_type, URI_LIST_TYPE)) {
 804                 GFile            *file;
 805                 GFileInputStream *input_stream;
 806                 gchar            *nl;
 807                 gchar            *data = NULL;
 808
 809                 nl = strstr (selection_data->data, "\r\n");
 810                 if (nl) {
 811                         gchar *uri;
 812
 813                         uri = g_strndup (selection_data->data,
 814                                          nl - (gchar*) selection_data->data);
 815
 816                         file = g_file_new_for_uri (uri);
 817                         g_free (uri);
 818                 } else {
 819                         file = g_file_new_for_uri (selection_data->data);
 820                 }
 821
 822                 input_stream = g_file_read (file, NULL, NULL);
 823
 824                 if (input_stream != NULL) {
 825                         GFileInfo *info;
 826
 827                         info = g_file_query_info (file,
 828                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 829                                                   0, NULL, NULL);
 830                         if (info != NULL) {
 831                                 goffset size;
 832                                 gssize bytes_read;
 833
 834                                 size = g_file_info_get_size (info);
 835                                 data = g_malloc (size);
 836
 837                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 838                                                                   data, size,
 839                                                                   NULL, NULL);
 840                                 if (bytes_read != -1) {
 841                                         avatar_chooser_set_image_from_data (
 842                                                 chooser, data,
 843                                                 (gsize) bytes_read,
 844                                                 TRUE);
 845                                         handled = TRUE;
 846                                 }
 847
 848                                 g_free (data);
 849                                 g_object_unref (info);
 850                         }
 851
 852                         g_object_unref (input_stream);
 853                 }
 854
 855                 g_object_unref (file);
 856         }
 857
 858         gtk_drag_finish (context, handled, FALSE, time);
 859 }
 860
 861 static void
 862 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 863                                   EmpathyAvatarChooser *chooser)
 864 {
 865         gchar *filename;
 866
 867         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 868
 869         if (filename) {
 870                 GtkWidget *image;
 871                 GdkPixbuf *pixbuf = NULL;
 872                 GdkPixbuf *scaled_pixbuf;
 873
 874                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 875
 876                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 877
 878                 if (pixbuf) {
 879                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 880                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 881                         g_object_unref (scaled_pixbuf);
 882                         g_object_unref (pixbuf);
 883                 } else {
 884                         gtk_image_set_from_stock (GTK_IMAGE (image),
 885                                                   "gtk-dialog-question",
 886                                                   GTK_ICON_SIZE_DIALOG);
 887                 }
 888         }
 889
 890         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 891 }
 892
 893 static void
 894 avatar_chooser_response_cb (GtkWidget            *widget,
 895                             gint                  response,
 896                             EmpathyAvatarChooser *chooser)
 897 {
 898         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 899
 900         if (response == GTK_RESPONSE_CANCEL) {
 901                 goto out;
 902         }
 903
 904         /* Check if we went non-ready since displaying the dialog. */
 905         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 906                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 907                 goto out;
 908         }
 909
 910         if (response == GTK_RESPONSE_OK) {
 911                 gchar *filename;
 912                 gchar *path;
 913
 914                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 915                 avatar_chooser_set_image_from_file (chooser, filename);
 916                 g_free (filename);
 917
 918                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 919                 if (path) {
 920                         empathy_conf_set_string (empathy_conf_get (),
 921                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 922                                                  path);
 923                         g_free (path);
 924                 }
 925         }
 926         else if (response == GTK_RESPONSE_NO) {
 927                 /* This corresponds to "No Image", not to "Cancel" */
 928                 avatar_chooser_clear_image (chooser);
 929         }
 930
 931 out:
 932         gtk_widget_destroy (widget);
 933 }
 934
 935 static void
 936 avatar_chooser_clicked_cb (GtkWidget            *button,
 937                            EmpathyAvatarChooser *chooser)
 938 {
 939         GtkFileChooser *chooser_dialog;
 940         GtkWidget      *image;
 941         gchar          *saved_dir = NULL;
 942         const gchar    *default_dir = DEFAULT_DIR;
 943         const gchar    *pics_dir;
 944         GtkFileFilter  *filter;
 945
 946         chooser_dialog = GTK_FILE_CHOOSER (
 947                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 948                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 949                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 950                                              _("No Image"),
 951                                              GTK_RESPONSE_NO,
 952                                              GTK_STOCK_CANCEL,
 953                                              GTK_RESPONSE_CANCEL,
 954                                              GTK_STOCK_OPEN,
 955                                              GTK_RESPONSE_OK,
 956                                              NULL));
 957
 958         /* Get special dirs */
 959         empathy_conf_get_string (empathy_conf_get (),
 960                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 961                                  &saved_dir);
 962         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 963                 g_free (saved_dir);
 964                 saved_dir = NULL;
 965         }
 966         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 967                 default_dir = NULL;
 968         }
 969         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 970         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 971                 pics_dir = NULL;
 972         }
 973
 974         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 975         if (saved_dir) {
 976                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 977         }
 978         else if (pics_dir) {
 979                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 980         }
 981         else if (default_dir) {
 982                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 983         } else {
 984                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 985         }
 986
 987         /* Add shortcuts to special dirs */
 988         if (saved_dir) {
 989                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 990         }
 991         else if (pics_dir) {
 992                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 993         }
 994         if (default_dir) {
 995                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 996         }
 997
 998         /* Setup preview image */
 999         image = gtk_image_new ();
1000         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
1001         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
1002         gtk_widget_show (image);
1003         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
1004         g_signal_connect (chooser_dialog, "update-preview",
1005                           G_CALLBACK (avatar_chooser_update_preview_cb),
1006                           chooser);
1007
1008         /* Setup filers */
1009         filter = gtk_file_filter_new ();
1010         gtk_file_filter_set_name (filter, _("Images"));
1011         gtk_file_filter_add_pixbuf_formats (filter);
1012         gtk_file_chooser_add_filter (chooser_dialog, filter);
1013         filter = gtk_file_filter_new ();
1014         gtk_file_filter_set_name (filter, _("All Files"));
1015         gtk_file_filter_add_pattern(filter, "*");
1016         gtk_file_chooser_add_filter (chooser_dialog, filter);
1017
1018         /* Setup response */
1019         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
1020         g_signal_connect (chooser_dialog, "response",
1021                           G_CALLBACK (avatar_chooser_response_cb),
1022                           chooser);
1023
1024         gtk_widget_show (GTK_WIDGET (chooser_dialog));
1025         g_free (saved_dir);
1026 }
1027
1028 GtkWidget *
1029 empathy_avatar_chooser_new ()
1030 {
1031         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
1032 }
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 void
1048 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
1049                                        const gchar          **data,
1050                                        gsize                 *data_size,
1051                                        const gchar          **mime_type)
1052 {
1053         EmpathyAvatarChooserPriv *priv;
1054
1055         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1056
1057         priv = GET_PRIV (chooser);
1058
1059         if (priv->avatar != NULL) {
1060                 if (data != NULL) {
1061                         *data = priv->avatar->data;
1062                 }
1063                 if (data_size != NULL) {
1064                         *data_size = priv->avatar->len;
1065                 }
1066                 if (mime_type != NULL) {
1067                         *mime_type = priv->avatar->format;
1068                 }
1069         } else {
1070                 if (data != NULL) {
1071                         *data = NULL;
1072                 }
1073                 if (data_size != NULL) {
1074                         *data_size = 0;
1075                 }
1076                 if (mime_type != NULL) {
1077                         *mime_type = NULL;
1078                 }
1079         }
1080 }
1081