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 gboolean
 291 str_in_strv (gchar  *str,
 292              gchar **strv)
 293 {
 294         if (strv == NULL) {
 295                 return FALSE;
 296         }
 297
 298         while (*strv != NULL) {
 299                 if (g_str_equal (str, *strv)) {
 300                         return TRUE;
 301                 }
 302                 strv++;
 303         }
 304         return FALSE;
 305 }
 306
 307 /* The caller must free the strings stored in satisfactory_format_name and
 308  * satisfactory_mime_type.
 309  */
 310 static gboolean
 311 can_satisfy_mime_type_requirements (gchar **accepted_mime_types,
 312                                     gchar **satisfactory_format_name,
 313                                     gchar **satisfactory_mime_type)
 314 {
 315         gchar *name = NULL;
 316         gchar *type = NULL;
 317
 318         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 319                 return FALSE;
 320         }
 321
 322         /* Special-case png and jpeg to avoid accidentally saving to something
 323          * uncompressed like bmp. This assumes that we can write image/png and
 324          * image/jpeg; if this isn't true then something's really wrong with
 325          * GdkPixbuf.
 326          */
 327         if (str_in_strv ("image/jpeg", accepted_mime_types)) {
 328                 name = g_strdup ("jpeg");
 329                 type = g_strdup ("image/jpeg");
 330         } else if (str_in_strv ("image/png", accepted_mime_types)) {
 331                 name = g_strdup ("png");
 332                 type = g_strdup ("image/png");
 333         } else {
 334                 GSList  *formats, *l;
 335                 gboolean found = FALSE;
 336
 337                 formats = gdk_pixbuf_get_formats ();
 338                 for (l = formats; !found && l != NULL; l = l->next) {
 339                         GdkPixbufFormat *format = l->data;
 340                         gchar **format_mime_types;
 341                         gchar **iter;
 342
 343                         if (!gdk_pixbuf_format_is_writable (format)) {
 344                                 continue;
 345                         }
 346
 347                         format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 348                         for (iter = format_mime_types; *iter != NULL; iter++) {
 349                                 if (str_in_strv (*iter, accepted_mime_types)) {
 350                                         name = gdk_pixbuf_format_get_name (format);
 351                                         type = g_strdup (*iter);
 352                                         found = TRUE;
 353                                         break;
 354                                 }
 355                         }
 356                         g_strfreev (format_mime_types);
 357                 }
 358
 359                 g_slist_free (formats);
 360         }
 361
 362         *satisfactory_format_name = name;
 363         *satisfactory_mime_type = type;
 364
 365         return name != NULL;
 366 }
 367
 368 static EmpathyAvatar *
 369 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 370                                         GdkPixbuf            *pixbuf,
 371                                         EmpathyAvatar        *avatar)
 372 {
 373         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 374         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 375         gint                      max_width = 0, max_height = 0, max_size = 0;
 376         gchar                   **mime_types = NULL;
 377         gboolean                  needs_conversion = FALSE;
 378         gint                      width, height;
 379         gchar                    *new_format_name = NULL;
 380         gchar                    *new_mime_type = NULL;
 381         gdouble                   min_factor, max_factor;
 382         gdouble                   factor;
 383         gchar                    *converted_image_data = NULL;
 384         gsize                     converted_image_size = 0;
 385
 386         /* This should only be called if the user is setting a new avatar,
 387          * which should only be allowed once the avatar requirements have been
 388          * discovered.
 389          */
 390         g_return_val_if_fail (tp_cf != NULL, NULL);
 391         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 392                 NULL);
 393
 394         g_object_get (tp_cf,
 395                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 396                 "avatar-max-width", &max_width,
 397                 "avatar-max-height", &max_height,
 398                 "avatar-max-size", &max_size,
 399                 NULL);
 400
 401         /* Smaller is the factor, smaller will be the image.
 402          * 0 is an empty image, 1 is the full size. */
 403         min_factor = 0;
 404         max_factor = 1;
 405         factor = 1;
 406
 407         if (!can_satisfy_mime_type_requirements (mime_types, &new_format_name,
 408                                                  &new_mime_type)) {
 409                 /* FIXME: That should be reported to the user */
 410                 DEBUG ("Mon dieu! Can't convert to any acceptable format!");
 411                 g_strfreev (mime_types);
 412                 return NULL;
 413         }
 414
 415         /* If the avatar is not already in the right type, it needs converting. */
 416         if (!str_in_strv (avatar->format, mime_types)) {
 417                 DEBUG ("Image format %s not supported by the protocol",
 418                         avatar->format);
 419
 420                 needs_conversion = TRUE;
 421         }
 422         g_strfreev (mime_types);
 423
 424         /* If width or height are too big, it needs converting. */
 425         width = gdk_pixbuf_get_width (pixbuf);
 426         height = gdk_pixbuf_get_height (pixbuf);
 427         if ((max_width > 0 && width > max_width) ||
 428             (max_height > 0 && height > max_height)) {
 429                 gdouble h_factor, v_factor;
 430
 431                 h_factor = (gdouble) max_width / width;
 432                 v_factor = (gdouble) max_height / height;
 433                 factor = max_factor = MIN (h_factor, v_factor);
 434
 435                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 436                        width, height, max_width, max_height);
 437
 438                 needs_conversion = TRUE;
 439         }
 440
 441         /* If the data len is too big and no other conversion is needed,
 442          * try with a lower factor. */
 443         if (max_size > 0 && avatar->len > max_size && !needs_conversion) {
 444                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 445                        "(max is %"G_GSIZE_FORMAT" bytes), conversion needed.",
 446                        avatar->len, max_size);
 447
 448                 factor = 0.5;
 449                 needs_conversion = TRUE;
 450         }
 451
 452         /* If no conversion is needed, return the avatar */
 453         if (!needs_conversion) {
 454                 g_free (new_format_name);
 455                 g_free (new_mime_type);
 456                 return empathy_avatar_ref (avatar);
 457         }
 458
 459         do {
 460                 GdkPixbuf *pixbuf_scaled = NULL;
 461                 gboolean   saved;
 462                 gint       new_width, new_height;
 463                 GError    *error = NULL;
 464
 465                 g_free (converted_image_data);
 466
 467                 if (factor != 1) {
 468                         new_width = width * factor;
 469                         new_height = height * factor;
 470                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 471                                                                  new_width,
 472                                                                  new_height,
 473                                                                  GDK_INTERP_HYPER);
 474                 } else {
 475                         new_width = width;
 476                         new_height = height;
 477                         pixbuf_scaled = g_object_ref (pixbuf);
 478                 }
 479
 480                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 481                         new_width, new_height, new_format_name);
 482
 483                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 484                                                    &converted_image_data,
 485                                                    &converted_image_size,
 486                                                    new_format_name,
 487                                                    &error, NULL);
 488
 489                 if (!saved) {
 490                         DEBUG ("Couldn't convert image: %s", error->message);
 491                         g_clear_error (&error);
 492                         g_free (new_format_name);
 493                         g_free (new_mime_type);
 494                         return NULL;
 495                 }
 496
 497                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 498                         converted_image_size);
 499
 500                 if (max_size == 0)
 501                         break;
 502
 503                 /* Make a binary search for the bigest factor that produce
 504                  * an image data size less than max_size */
 505                 if (converted_image_size > max_size)
 506                         max_factor = factor;
 507                 if (converted_image_size < max_size)
 508                         min_factor = factor;
 509                 factor = min_factor + (max_factor - min_factor)/2;
 510
 511                 /* We are done if either:
 512                  * - min_factor == max_factor. That happens if we resized to
 513                  *   the max required dimension and the produced data size is
 514                  *   less than max_size.
 515                  * - The data size is close enough to max_size. Here we accept
 516                  *   a difference of 1k.
 517                  */
 518         } while (min_factor != max_factor &&
 519                  ABS (max_size - converted_image_size) > 1024);
 520         g_free (new_format_name);
 521
 522         /* Takes ownership of new_mime_type and converted_image_data */
 523         avatar = empathy_avatar_new (converted_image_data,
 524                 converted_image_size, new_mime_type, NULL);
 525
 526         return avatar;
 527 }
 528
 529 static void
 530 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 531 {
 532         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 533         GtkWidget *image;
 534
 535         if (priv->avatar == NULL) {
 536                 return;
 537         }
 538
 539         empathy_avatar_unref (priv->avatar);
 540         priv->avatar = NULL;
 541
 542         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 543         gtk_button_set_image (GTK_BUTTON (chooser), image);
 544         g_signal_emit (chooser, signals[CHANGED], 0);
 545 }
 546
 547 static void
 548 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 549                                     gchar                *data,
 550                                     gsize                 size,
 551                                     gboolean              set_locally)
 552 {
 553         GdkPixbuf     *pixbuf;
 554         EmpathyAvatar *avatar = NULL;
 555         gchar         *mime_type = NULL;
 556
 557         if (data == NULL) {
 558                 avatar_chooser_clear_image (chooser);
 559                 return;
 560         }
 561
 562         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 563         if (pixbuf == NULL) {
 564                 g_free (data);
 565                 return;
 566         }
 567
 568         /* avatar takes ownership of data and mime_type */
 569         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 570
 571         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 572 }
 573
 574 static void
 575 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 576                                       EmpathyAvatar        *avatar,
 577                                       gboolean              set_locally)
 578 {
 579         GdkPixbuf *pixbuf;
 580         gchar     *mime_type = NULL;
 581
 582         g_assert (avatar != NULL);
 583
 584         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 585                                                     avatar->len,
 586                                                     &mime_type);
 587         if (pixbuf == NULL) {
 588                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 589                 return;
 590         }
 591
 592         if (avatar->format == NULL) {
 593                 avatar->format = mime_type;
 594         } else {
 595                 if (strcmp (mime_type, avatar->format)) {
 596                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 597                                 avatar->format, mime_type);
 598                 }
 599                 g_free (mime_type);
 600         }
 601
 602         empathy_avatar_ref (avatar);
 603
 604         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 605 }
 606
 607 static void
 608 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 609                           EmpathyAvatar        *avatar,
 610                           GdkPixbuf            *pixbuf,
 611                           gboolean              set_locally)
 612 {
 613         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 614         GdkPixbuf                *pixbuf_view;
 615         GtkWidget                *image;
 616
 617         g_assert (avatar != NULL);
 618         g_assert (pixbuf != NULL);
 619
 620         if (set_locally) {
 621                 EmpathyAvatar *conv;
 622
 623                 conv = avatar_chooser_maybe_convert_and_scale (chooser,
 624                         pixbuf, avatar);
 625                 empathy_avatar_unref (avatar);
 626
 627                 if (conv == NULL) {
 628                         /* An error occured; don't change the avatar. */
 629                         return;
 630                 }
 631
 632                 avatar = conv;
 633         }
 634
 635         if (priv->avatar != NULL) {
 636                 empathy_avatar_unref (priv->avatar);
 637         }
 638         priv->avatar = avatar;
 639
 640         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 641         image = gtk_image_new_from_pixbuf (pixbuf_view);
 642
 643         gtk_button_set_image (GTK_BUTTON (chooser), image);
 644         g_signal_emit (chooser, signals[CHANGED], 0);
 645
 646         g_object_unref (pixbuf_view);
 647         g_object_unref (pixbuf);
 648 }
 649
 650 static void
 651 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 652                                     const gchar          *filename)
 653 {
 654         gchar  *image_data = NULL;
 655         gsize   image_size = 0;
 656         GError *error = NULL;
 657
 658         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 659                 DEBUG ("Failed to load image from '%s': %s", filename,
 660                         error ? error->message : "No error given");
 661
 662                 g_clear_error (&error);
 663                 return;
 664         }
 665
 666         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 667 }
 668
 669 static gboolean
 670 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 671                               GdkDragContext     *context,
 672                               gint                x,
 673                               gint                y,
 674                               guint               time,
 675                               EmpathyAvatarChooser *chooser)
 676 {
 677         EmpathyAvatarChooserPriv *priv;
 678         GList                  *p;
 679
 680         priv = GET_PRIV (chooser);
 681
 682         for (p = context->targets; p != NULL; p = p->next) {
 683                 gchar *possible_type;
 684
 685                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 686
 687                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 688                         g_free (possible_type);
 689                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 690
 691                         return TRUE;
 692                 }
 693
 694                 g_free (possible_type);
 695         }
 696
 697         return FALSE;
 698 }
 699
 700 static void
 701 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 702                              GdkDragContext     *context,
 703                              guint               time,
 704                              EmpathyAvatarChooser *chooser)
 705 {
 706 }
 707
 708 static gboolean
 709 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 710                             GdkDragContext     *context,
 711                             gint                x,
 712                             gint                y,
 713                             guint               time,
 714                             EmpathyAvatarChooser *chooser)
 715 {
 716         EmpathyAvatarChooserPriv *priv;
 717         GList                  *p;
 718
 719         priv = GET_PRIV (chooser);
 720
 721         if (context->targets == NULL) {
 722                 return FALSE;
 723         }
 724
 725         for (p = context->targets; p != NULL; p = p->next) {
 726                 char *possible_type;
 727
 728                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 729                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 730                         g_free (possible_type);
 731                         gtk_drag_get_data (widget, context,
 732                                            GDK_POINTER_TO_ATOM (p->data),
 733                                            time);
 734
 735                         return TRUE;
 736                 }
 737
 738                 g_free (possible_type);
 739         }
 740
 741         return FALSE;
 742 }
 743
 744 static void
 745 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 746                                      GdkDragContext     *context,
 747                                      gint                x,
 748                                      gint                y,
 749                                      GtkSelectionData   *selection_data,
 750                                      guint               info,
 751                                      guint               time,
 752                                      EmpathyAvatarChooser *chooser)
 753 {
 754         gchar    *target_type;
 755         gboolean  handled = FALSE;
 756
 757         target_type = gdk_atom_name (selection_data->target);
 758         if (!strcmp (target_type, URI_LIST_TYPE)) {
 759                 GFile            *file;
 760                 GFileInputStream *input_stream;
 761                 gchar            *nl;
 762                 gchar            *data = NULL;
 763
 764                 nl = strstr (selection_data->data, "\r\n");
 765                 if (nl) {
 766                         gchar *uri;
 767
 768                         uri = g_strndup (selection_data->data,
 769                                          nl - (gchar*) selection_data->data);
 770
 771                         file = g_file_new_for_uri (uri);
 772                         g_free (uri);
 773                 } else {
 774                         file = g_file_new_for_uri (selection_data->data);
 775                 }
 776
 777                 input_stream = g_file_read (file, NULL, NULL);
 778
 779                 if (input_stream != NULL) {
 780                         GFileInfo *info;
 781
 782                         info = g_file_query_info (file,
 783                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 784                                                   0, NULL, NULL);
 785                         if (info != NULL) {
 786                                 goffset size;
 787                                 gssize bytes_read;
 788
 789                                 size = g_file_info_get_size (info);
 790                                 data = g_malloc (size);
 791
 792                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 793                                                                   data, size,
 794                                                                   NULL, NULL);
 795                                 if (bytes_read != -1) {
 796                                         avatar_chooser_set_image_from_data (
 797                                                 chooser, data,
 798                                                 (gsize) bytes_read,
 799                                                 TRUE);
 800                                         handled = TRUE;
 801                                 }
 802
 803                                 g_free (data);
 804                                 g_object_unref (info);
 805                         }
 806
 807                         g_object_unref (input_stream);
 808                 }
 809
 810                 g_object_unref (file);
 811         }
 812
 813         gtk_drag_finish (context, handled, FALSE, time);
 814 }
 815
 816 static void
 817 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 818                                   EmpathyAvatarChooser *chooser)
 819 {
 820         gchar *filename;
 821
 822         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 823
 824         if (filename) {
 825                 GtkWidget *image;
 826                 GdkPixbuf *pixbuf = NULL;
 827                 GdkPixbuf *scaled_pixbuf;
 828
 829                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 830
 831                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 832
 833                 if (pixbuf) {
 834                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 835                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 836                         g_object_unref (scaled_pixbuf);
 837                         g_object_unref (pixbuf);
 838                 } else {
 839                         gtk_image_set_from_stock (GTK_IMAGE (image),
 840                                                   "gtk-dialog-question",
 841                                                   GTK_ICON_SIZE_DIALOG);
 842                 }
 843         }
 844
 845         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 846 }
 847
 848 static void
 849 avatar_chooser_response_cb (GtkWidget            *widget,
 850                             gint                  response,
 851                             EmpathyAvatarChooser *chooser)
 852 {
 853         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 854
 855         if (response == GTK_RESPONSE_CANCEL) {
 856                 goto out;
 857         }
 858
 859         /* Check if we went non-ready since displaying the dialog. */
 860         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 861                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 862                 goto out;
 863         }
 864
 865         if (response == GTK_RESPONSE_OK) {
 866                 gchar *filename;
 867                 gchar *path;
 868
 869                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 870                 avatar_chooser_set_image_from_file (chooser, filename);
 871                 g_free (filename);
 872
 873                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 874                 if (path) {
 875                         empathy_conf_set_string (empathy_conf_get (),
 876                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 877                                                  path);
 878                         g_free (path);
 879                 }
 880         }
 881         else if (response == GTK_RESPONSE_NO) {
 882                 /* This corresponds to "No Image", not to "Cancel" */
 883                 avatar_chooser_clear_image (chooser);
 884         }
 885
 886 out:
 887         gtk_widget_destroy (widget);
 888 }
 889
 890 static void
 891 avatar_chooser_clicked_cb (GtkWidget            *button,
 892                            EmpathyAvatarChooser *chooser)
 893 {
 894         GtkFileChooser *chooser_dialog;
 895         GtkWidget      *image;
 896         gchar          *saved_dir = NULL;
 897         const gchar    *default_dir = DEFAULT_DIR;
 898         const gchar    *pics_dir;
 899         GtkFileFilter  *filter;
 900
 901         chooser_dialog = GTK_FILE_CHOOSER (
 902                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 903                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 904                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 905                                              _("No Image"),
 906                                              GTK_RESPONSE_NO,
 907                                              GTK_STOCK_CANCEL,
 908                                              GTK_RESPONSE_CANCEL,
 909                                              GTK_STOCK_OPEN,
 910                                              GTK_RESPONSE_OK,
 911                                              NULL));
 912
 913         /* Get special dirs */
 914         empathy_conf_get_string (empathy_conf_get (),
 915                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 916                                  &saved_dir);
 917         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 918                 g_free (saved_dir);
 919                 saved_dir = NULL;
 920         }
 921         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 922                 default_dir = NULL;
 923         }
 924         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 925         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 926                 pics_dir = NULL;
 927         }
 928
 929         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 930         if (saved_dir) {
 931                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 932         }
 933         else if (pics_dir) {
 934                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 935         }
 936         else if (default_dir) {
 937                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 938         } else {
 939                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 940         }
 941
 942         /* Add shortcuts to special dirs */
 943         if (saved_dir) {
 944                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 945         }
 946         else if (pics_dir) {
 947                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 948         }
 949         if (default_dir) {
 950                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 951         }
 952
 953         /* Setup preview image */
 954         image = gtk_image_new ();
 955         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 956         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 957         gtk_widget_show (image);
 958         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 959         g_signal_connect (chooser_dialog, "update-preview",
 960                           G_CALLBACK (avatar_chooser_update_preview_cb),
 961                           chooser);
 962
 963         /* Setup filers */
 964         filter = gtk_file_filter_new ();
 965         gtk_file_filter_set_name (filter, _("Images"));
 966         gtk_file_filter_add_pixbuf_formats (filter);
 967         gtk_file_chooser_add_filter (chooser_dialog, filter);
 968         filter = gtk_file_filter_new ();
 969         gtk_file_filter_set_name (filter, _("All Files"));
 970         gtk_file_filter_add_pattern(filter, "*");
 971         gtk_file_chooser_add_filter (chooser_dialog, filter);
 972
 973         /* Setup response */
 974         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 975         g_signal_connect (chooser_dialog, "response",
 976                           G_CALLBACK (avatar_chooser_response_cb),
 977                           chooser);
 978
 979         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 980         g_free (saved_dir);
 981 }
 982
 983 GtkWidget *
 984 empathy_avatar_chooser_new ()
 985 {
 986         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 987 }
 988
 989 void
 990 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 991                             EmpathyAvatar        *avatar)
 992 {
 993         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 994
 995         if (avatar != NULL) {
 996                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
 997         } else {
 998                 avatar_chooser_clear_image (chooser);
 999         }
1000 }
1001
1002 void
1003 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
1004                                        const gchar          **data,
1005                                        gsize                 *data_size,
1006                                        const gchar          **mime_type)
1007 {
1008         EmpathyAvatarChooserPriv *priv;
1009
1010         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1011
1012         priv = GET_PRIV (chooser);
1013
1014         if (priv->avatar != NULL) {
1015                 if (data != NULL) {
1016                         *data = priv->avatar->data;
1017                 }
1018                 if (data_size != NULL) {
1019                         *data_size = priv->avatar->len;
1020                 }
1021                 if (mime_type != NULL) {
1022                         *mime_type = priv->avatar->format;
1023                 }
1024         } else {
1025                 if (data != NULL) {
1026                         *data = NULL;
1027                 }
1028                 if (data_size != NULL) {
1029                         *data_size = 0;
1030                 }
1031                 if (mime_type != NULL) {
1032                         *mime_type = NULL;
1033                 }
1034         }
1035 }
1036