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 "empathy-avatar-chooser.h"
  34 #include "empathy-conf.h"
  35 #include "empathy-ui-utils.h"
  36
  37 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  38 #include <libempathy/empathy-debug.h>
  39
  40 #define AVATAR_SIZE_SAVE 96
  41 #define AVATAR_SIZE_VIEW 64
  42 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  43
  44 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  45 typedef struct {
  46         EmpathyContactFactory   *contact_factory;
  47         McAccount               *account;
  48         EmpathyTpContactFactory *tp_contact_factory;
  49
  50         gulong ready_handler_id;
  51
  52         EmpathyAvatar *avatar;
  53 } EmpathyAvatarChooserPriv;
  54
  55 static void       avatar_chooser_finalize              (GObject              *object);
  56 static void       avatar_chooser_set_account           (EmpathyAvatarChooser *self,
  57                                                         McAccount            *account);
  58 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *chooser,
  59                                                         EmpathyAvatar        *avatar,
  60                                                         GdkPixbuf            *pixbuf,
  61                                                         gboolean              set_locally);
  62 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  63                                                         GdkDragContext       *context,
  64                                                         gint                  x,
  65                                                         gint                  y,
  66                                                         guint                 time,
  67                                                         EmpathyAvatarChooser *chooser);
  68 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  69                                                         GdkDragContext       *context,
  70                                                         guint                 time,
  71                                                         EmpathyAvatarChooser *chooser);
  72 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  73                                                         GdkDragContext       *context,
  74                                                         gint                  x,
  75                                                         gint                  y,
  76                                                         guint                 time,
  77                                                         EmpathyAvatarChooser *chooser);
  78 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  79                                                         GdkDragContext       *context,
  80                                                         gint                  x,
  81                                                         gint                  y,
  82                                                         GtkSelectionData     *selection_data,
  83                                                         guint                 info,
  84                                                         guint                 time,
  85                                                         EmpathyAvatarChooser *chooser);
  86 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  87                                                         EmpathyAvatarChooser *chooser);
  88
  89 enum {
  90         CHANGED,
  91         LAST_SIGNAL
  92 };
  93
  94 enum {
  95         PROP_0,
  96         PROP_ACCOUNT
  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         EmpathyAvatarChooserPriv *priv = GET_PRIV (object);
 123
 124         switch (param_id) {
 125         case PROP_ACCOUNT:
 126                 g_value_set_object (value, priv->account);
 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_property (GObject      *object,
 136                              guint         param_id,
 137                              const GValue *value,
 138                              GParamSpec   *pspec)
 139 {
 140         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 141
 142         switch (param_id) {
 143         case PROP_ACCOUNT:
 144                 avatar_chooser_set_account (self, g_value_get_object (value));
 145                 break;
 146         default:
 147                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 148                 break;
 149         }
 150 }
 151
 152 static void
 153 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 154 {
 155         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 156         GParamSpec *param_spec;
 157
 158         object_class->finalize = avatar_chooser_finalize;
 159         object_class->get_property = avatar_chooser_get_property;
 160         object_class->set_property = avatar_chooser_set_property;
 161
 162         signals[CHANGED] =
 163                 g_signal_new ("changed",
 164                               G_TYPE_FROM_CLASS (klass),
 165                               G_SIGNAL_RUN_LAST,
 166                               0,
 167                               NULL, NULL,
 168                               g_cclosure_marshal_VOID__VOID,
 169                               G_TYPE_NONE, 0);
 170
 171         param_spec = g_param_spec_object ("account",
 172                                           "McAccount",
 173                                           "McAccount whose avatar should be "
 174                                           "shown and modified by this widget",
 175                                           MC_TYPE_ACCOUNT,
 176                                           G_PARAM_READWRITE |
 177                                           G_PARAM_STATIC_STRINGS);
 178         g_object_class_install_property (object_class,
 179                                          PROP_ACCOUNT,
 180                                          param_spec);
 181
 182         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 183 }
 184
 185 static void
 186 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 187 {
 188         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 189                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 190
 191         chooser->priv = priv;
 192         gtk_drag_dest_set (GTK_WIDGET (chooser),
 193                            GTK_DEST_DEFAULT_ALL,
 194                            drop_types,
 195                            G_N_ELEMENTS (drop_types),
 196                            GDK_ACTION_COPY);
 197
 198         g_signal_connect (chooser, "drag-motion",
 199                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 200                           chooser);
 201         g_signal_connect (chooser, "drag-leave",
 202                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 203                           chooser);
 204         g_signal_connect (chooser, "drag-drop",
 205                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 206                           chooser);
 207         g_signal_connect (chooser, "drag-data-received",
 208                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 209                           chooser);
 210         g_signal_connect (chooser, "clicked",
 211                           G_CALLBACK (avatar_chooser_clicked_cb),
 212                           chooser);
 213
 214         priv->contact_factory = empathy_contact_factory_new ();
 215
 216         empathy_avatar_chooser_set (chooser, NULL);
 217 }
 218
 219 static void
 220 avatar_chooser_finalize (GObject *object)
 221 {
 222         EmpathyAvatarChooserPriv *priv;
 223
 224         priv = GET_PRIV (object);
 225
 226         avatar_chooser_set_account (EMPATHY_AVATAR_CHOOSER (object), NULL);
 227         g_assert (priv->account == NULL && priv->tp_contact_factory == NULL);
 228
 229         g_object_unref (priv->contact_factory);
 230
 231         if (priv->avatar != NULL) {
 232                 empathy_avatar_unref (priv->avatar);
 233         }
 234
 235         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 236 }
 237
 238 static void
 239 avatar_chooser_tp_cf_ready_cb (EmpathyTpContactFactory *tp_cf,
 240                                GParamSpec              *unused,
 241                                EmpathyAvatarChooser    *self)
 242 {
 243         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 244         gboolean ready;
 245
 246         /* sanity check that we're listening on the right ETpCF */
 247         g_assert (priv->tp_contact_factory == tp_cf);
 248
 249         ready = empathy_tp_contact_factory_is_ready (tp_cf);
 250         gtk_widget_set_sensitive (GTK_WIDGET (self), ready);
 251 }
 252
 253 static void
 254 avatar_chooser_set_account (EmpathyAvatarChooser *self,
 255                             McAccount            *account)
 256 {
 257         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 258
 259         if (priv->account != NULL) {
 260                 g_object_unref (priv->account);
 261                 priv->account = NULL;
 262
 263                 g_assert (priv->tp_contact_factory != NULL);
 264
 265                 g_signal_handler_disconnect (priv->tp_contact_factory,
 266                         priv->ready_handler_id);
 267                 priv->ready_handler_id = 0;
 268
 269                 g_object_unref (priv->tp_contact_factory);
 270                 priv->tp_contact_factory = NULL;
 271         }
 272
 273         if (account != NULL) {
 274                 priv->account = g_object_ref (account);
 275                 priv->tp_contact_factory = g_object_ref (
 276                         empathy_contact_factory_get_tp_factory (
 277                                 priv->contact_factory, priv->account));
 278
 279                 priv->ready_handler_id = g_signal_connect (
 280                         priv->tp_contact_factory, "notify::ready",
 281                         G_CALLBACK (avatar_chooser_tp_cf_ready_cb), self);
 282                 avatar_chooser_tp_cf_ready_cb (priv->tp_contact_factory, NULL,
 283                         self);
 284         }
 285 }
 286
 287 static gboolean
 288 str_in_strv (gchar  *str,
 289              gchar **strv)
 290 {
 291         if (strv == NULL) {
 292                 return FALSE;
 293         }
 294
 295         while (*strv != NULL) {
 296                 if (g_str_equal (str, *strv)) {
 297                         return TRUE;
 298                 }
 299                 strv++;
 300         }
 301         return FALSE;
 302 }
 303
 304 /* The caller must free the strings stored in satisfactory_format_name and
 305  * satisfactory_mime_type.
 306  */
 307 static gboolean
 308 can_satisfy_mime_type_requirements (gchar **accepted_mime_types,
 309                                     gchar **satisfactory_format_name,
 310                                     gchar **satisfactory_mime_type)
 311 {
 312         gchar   *name = NULL,
 313                 *type = NULL;
 314         gboolean done = FALSE;
 315
 316         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 317                 return FALSE;
 318         }
 319
 320         g_assert (satisfactory_format_name != NULL);
 321         g_assert (satisfactory_mime_type != NULL);
 322
 323         /* Special-case png and jpeg to avoid accidentally saving to something
 324          * uncompressed like bmp. This assumes that we can write image/png and
 325          * image/jpeg; if this isn't true then something's really wrong with
 326          * GdkPixbuf.
 327          */
 328         if (str_in_strv ("image/png", accepted_mime_types)) {
 329                 name = g_strdup ("png");
 330                 type = g_strdup ("image/png");
 331                 done = TRUE;
 332         } else if (str_in_strv ("image/jpeg", accepted_mime_types)) {
 333                 name = g_strdup ("jpeg");
 334                 type = g_strdup ("image/jpeg");
 335                 done = TRUE;
 336         } else {
 337                 GSList  *formats = gdk_pixbuf_get_formats ();
 338                 GSList  *l;
 339                 gchar  **strv;
 340
 341                 for (l = formats; !done && l != NULL; l = l->next) {
 342                         GdkPixbufFormat *format = l->data;
 343                         gchar **format_mime_types;
 344
 345                         if (!gdk_pixbuf_format_is_writable (format)) {
 346                                 continue;
 347                         }
 348
 349                         format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 350                         for (strv = format_mime_types; *strv != NULL; strv++) {
 351                                 if (str_in_strv (*strv, accepted_mime_types)) {
 352                                         name = gdk_pixbuf_format_get_name (format);
 353                                         type = g_strdup (*strv);
 354                                         done = TRUE;
 355                                         break;
 356                                 }
 357                         }
 358                         g_strfreev (format_mime_types);
 359                 }
 360
 361                 g_slist_free (formats);
 362         }
 363
 364         if (done) {
 365                 *satisfactory_format_name = name;
 366                 *satisfactory_mime_type = type;
 367                 return TRUE;
 368         } else {
 369                 /* check we're not leaking. */
 370                 g_assert (name == NULL && type == NULL);
 371                 return FALSE;
 372         }
 373 }
 374
 375 static EmpathyAvatar *
 376 avatar_chooser_convert (EmpathyAvatarChooser *chooser,
 377                         GdkPixbuf            *pixbuf_scaled,
 378                         gchar               **mime_types,
 379                         gsize                 max_size)
 380 {
 381         gchar         *format_name = NULL, *new_mime_type = NULL;
 382         gchar         *converted_image_data = NULL;
 383         gsize          converted_image_size = 0;
 384         EmpathyAvatar *converted_avatar = NULL;
 385         gboolean       saved;
 386         GError        *error = NULL;
 387
 388         if (!can_satisfy_mime_type_requirements (mime_types, &format_name,
 389                                                  &new_mime_type)) {
 390                 DEBUG ("Mon dieu! Can't convert to any acceptable format!");
 391                 return NULL;
 392         }
 393
 394         saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled, &converted_image_data,
 395                 &converted_image_size, format_name, &error, NULL);
 396         g_free (format_name);
 397
 398         if (!saved) {
 399                 DEBUG ("Couldn't convert image: %s", error->message);
 400                 g_error_free (error);
 401
 402                 g_free (new_mime_type);
 403                 return NULL;
 404         }
 405
 406         /* Takes ownership of new_mime_type */
 407         converted_avatar = empathy_avatar_new (converted_image_data,
 408                 converted_image_size, new_mime_type, NULL);
 409
 410         if (max_size > 0 && converted_avatar->len > max_size) {
 411                 /* FIXME: We could try converting to a different format; in
 412                  *        particular, try converting to jpeg with increasingly
 413                  *        high compression (if jpeg is supported). Not sure how
 414                  *        much we care.
 415                  */
 416                 DEBUG ("Converted the image, but the new filesize is too big");
 417
 418                 empathy_avatar_unref (converted_avatar);
 419                 converted_avatar = NULL;
 420         }
 421
 422         return converted_avatar;
 423 }
 424
 425 static EmpathyAvatar *
 426 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 427                                         GdkPixbuf            *pixbuf,
 428                                         EmpathyAvatar        *avatar)
 429 {
 430         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 431         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 432         gint                      max_width = 0, max_height = 0, max_size = 0;
 433         gchar                   **mime_types = NULL;
 434         gboolean                  needs_conversion = FALSE;
 435         GdkPixbuf                *pixbuf_scaled = NULL;
 436
 437         /* This should only be called if the user is setting a new avatar,
 438          * which should only be allowed once the avatar requirements have been
 439          * discovered.
 440          */
 441         g_return_val_if_fail (tp_cf != NULL, NULL);
 442         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 443                 NULL);
 444
 445         g_object_get (tp_cf,
 446                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 447                 "avatar-max-width", &max_width,
 448                 "avatar-max-height", &max_height,
 449                 "avatar-max-size", &max_size,
 450                 NULL);
 451
 452         /* If the avatar's not already the right type, it needs converting. */
 453         if (!str_in_strv (avatar->format, mime_types)) {
 454                 needs_conversion = TRUE;
 455         }
 456
 457         /* If _scale_down_if_necessary yields a new pixbuf, then it needed
 458          * scaling.  If it's the same pixbuf, it did not, and did no extra work
 459          * beyond checking the dimensions.  Hence, we call it even if
 460          * needs_conversion is already TRUE, rather than duplicating the
 461          * dimension checking code here, as it's no more expensive than
 462          * checking the dimensions first in the case where no scaling is
 463          * necessary.
 464          */
 465         pixbuf_scaled = empathy_pixbuf_scale_down_if_necessary (pixbuf,
 466                 MIN(max_width, max_height));
 467         if (pixbuf_scaled != pixbuf) {
 468                 needs_conversion = TRUE;
 469         }
 470
 471         if (max_size > 0 && avatar->len > max_size) {
 472                 needs_conversion = TRUE;
 473         }
 474
 475         if (needs_conversion) {
 476                 avatar = avatar_chooser_convert (chooser, pixbuf_scaled,
 477                         mime_types, max_size);
 478         } else {
 479                 /* Just return another reference to the avatar passed in. */
 480                 avatar = empathy_avatar_ref (avatar);
 481         }
 482
 483         g_object_unref (pixbuf_scaled);
 484         g_strfreev (mime_types);
 485         return avatar;
 486 }
 487
 488 static void
 489 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 490 {
 491         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 492         GtkWidget *image;
 493
 494         if (priv->avatar == NULL) {
 495                 return;
 496         }
 497
 498         empathy_avatar_unref (priv->avatar);
 499         priv->avatar = NULL;
 500
 501         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 502         gtk_button_set_image (GTK_BUTTON (chooser), image);
 503         g_signal_emit (chooser, signals[CHANGED], 0);
 504 }
 505
 506 static void
 507 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 508                                     gchar                *data,
 509                                     gsize                 size,
 510                                     gboolean              set_locally)
 511 {
 512         GdkPixbuf     *pixbuf;
 513         EmpathyAvatar *avatar = NULL;
 514         gchar         *mime_type = NULL;
 515
 516         if (data == NULL) {
 517                 avatar_chooser_clear_image (chooser);
 518                 g_free (data);
 519                 return;
 520         }
 521
 522         pixbuf = empathy_pixbuf_from_data (data, size, &mime_type);
 523         if (pixbuf == NULL) {
 524                 g_free (data);
 525                 return;
 526         }
 527
 528         /* avatar takes ownership of data and mime_type */
 529         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 530
 531         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 532 }
 533
 534 static void
 535 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 536                                       EmpathyAvatar        *avatar,
 537                                       gboolean              set_locally)
 538 {
 539         GdkPixbuf *pixbuf;
 540         gchar     *mime_type = NULL;
 541
 542         g_assert (avatar != NULL);
 543
 544         pixbuf = empathy_pixbuf_from_data (avatar->data, avatar->len, &mime_type);
 545         if (pixbuf == NULL) {
 546                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 547                 return;
 548         }
 549
 550         if (avatar->format == NULL) {
 551                 avatar->format = mime_type;
 552         } else if (strcmp (mime_type, avatar->format)) {
 553                 DEBUG ("avatar had incorrect format! correcting");
 554                 g_free (avatar->format);
 555                 avatar->format = mime_type;
 556         } else {
 557                 g_free (mime_type);
 558         }
 559
 560         empathy_avatar_ref (avatar);
 561
 562         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 563 }
 564
 565 static void
 566 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 567                           EmpathyAvatar        *avatar,
 568                           GdkPixbuf            *pixbuf,
 569                           gboolean              set_locally)
 570 {
 571         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 572         GdkPixbuf                *pixbuf_view;
 573         GtkWidget                *image;
 574
 575         g_assert (avatar != NULL);
 576         g_assert (pixbuf != NULL);
 577
 578         if (set_locally) {
 579                 EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
 580                         chooser, pixbuf, avatar);
 581                 empathy_avatar_unref (avatar);
 582
 583                 if (conv == NULL) {
 584                         /* An error occured; don't change the avatar. */
 585                         return;
 586                 }
 587
 588                 avatar = conv;
 589         }
 590
 591         if (priv->avatar != NULL) {
 592                 empathy_avatar_unref (priv->avatar);
 593         }
 594         priv->avatar = avatar;
 595
 596         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 597         image = gtk_image_new_from_pixbuf (pixbuf_view);
 598
 599         gtk_button_set_image (GTK_BUTTON (chooser), image);
 600         g_signal_emit (chooser, signals[CHANGED], 0);
 601
 602         g_object_unref (pixbuf_view);
 603         g_object_unref (pixbuf);
 604 }
 605
 606 static void
 607 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 608                                     const gchar          *filename)
 609 {
 610         gchar  *image_data = NULL;
 611         gsize   image_size = 0;
 612         GError *error = NULL;
 613
 614         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 615                 DEBUG ("Failed to load image from '%s': %s", filename,
 616                         error ? error->message : "No error given");
 617
 618                 g_clear_error (&error);
 619                 return;
 620         }
 621
 622         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 623 }
 624
 625 static gboolean
 626 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 627                               GdkDragContext     *context,
 628                               gint                x,
 629                               gint                y,
 630                               guint               time,
 631                               EmpathyAvatarChooser *chooser)
 632 {
 633         EmpathyAvatarChooserPriv *priv;
 634         GList                  *p;
 635
 636         priv = GET_PRIV (chooser);
 637
 638         for (p = context->targets; p != NULL; p = p->next) {
 639                 gchar *possible_type;
 640
 641                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 642
 643                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 644                         g_free (possible_type);
 645                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 646
 647                         return TRUE;
 648                 }
 649
 650                 g_free (possible_type);
 651         }
 652
 653         return FALSE;
 654 }
 655
 656 static void
 657 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 658                              GdkDragContext     *context,
 659                              guint               time,
 660                              EmpathyAvatarChooser *chooser)
 661 {
 662 }
 663
 664 static gboolean
 665 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 666                             GdkDragContext     *context,
 667                             gint                x,
 668                             gint                y,
 669                             guint               time,
 670                             EmpathyAvatarChooser *chooser)
 671 {
 672         EmpathyAvatarChooserPriv *priv;
 673         GList                  *p;
 674
 675         priv = GET_PRIV (chooser);
 676
 677         if (context->targets == NULL) {
 678                 return FALSE;
 679         }
 680
 681         for (p = context->targets; p != NULL; p = p->next) {
 682                 char *possible_type;
 683
 684                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 685                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 686                         g_free (possible_type);
 687                         gtk_drag_get_data (widget, context,
 688                                            GDK_POINTER_TO_ATOM (p->data),
 689                                            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_data_received_cb (GtkWidget          *widget,
 702                                      GdkDragContext     *context,
 703                                      gint                x,
 704                                      gint                y,
 705                                      GtkSelectionData   *selection_data,
 706                                      guint               info,
 707                                      guint               time,
 708                                      EmpathyAvatarChooser *chooser)
 709 {
 710         gchar    *target_type;
 711         gboolean  handled = FALSE;
 712
 713         target_type = gdk_atom_name (selection_data->target);
 714         if (!strcmp (target_type, URI_LIST_TYPE)) {
 715                 GFile            *file;
 716                 GFileInputStream *input_stream;
 717                 gchar            *nl;
 718                 gchar            *data = NULL;
 719
 720                 nl = strstr (selection_data->data, "\r\n");
 721                 if (nl) {
 722                         gchar *uri;
 723
 724                         uri = g_strndup (selection_data->data,
 725                                          nl - (gchar*) selection_data->data);
 726
 727                         file = g_file_new_for_uri (uri);
 728                         g_free (uri);
 729                 } else {
 730                         file = g_file_new_for_uri (selection_data->data);
 731                 }
 732
 733                 input_stream = g_file_read (file, NULL, NULL);
 734
 735                 if (input_stream != NULL) {
 736                         GFileInfo *info;
 737
 738                         info = g_file_query_info (file,
 739                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 740                                                   0, NULL, NULL);
 741                         if (info != NULL) {
 742                                 goffset size;
 743                                 gssize bytes_read;
 744
 745                                 size = g_file_info_get_size (info);
 746                                 data = g_malloc (size);
 747
 748                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 749                                                                   data, size,
 750                                                                   NULL, NULL);
 751                                 if (bytes_read != -1) {
 752                                         avatar_chooser_set_image_from_data (
 753                                                 chooser, data,
 754                                                 (gsize) bytes_read,
 755                                                 TRUE);
 756                                         handled = TRUE;
 757                                 }
 758
 759                                 g_free (data);
 760                                 g_object_unref (info);
 761                         }
 762
 763                         g_object_unref (input_stream);
 764                 }
 765
 766                 g_object_unref (file);
 767         }
 768
 769         gtk_drag_finish (context, handled, FALSE, time);
 770 }
 771
 772 static void
 773 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 774                                   EmpathyAvatarChooser *chooser)
 775 {
 776         gchar *filename;
 777
 778         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 779
 780         if (filename) {
 781                 GtkWidget *image;
 782                 GdkPixbuf *pixbuf = NULL;
 783                 GdkPixbuf *scaled_pixbuf;
 784
 785                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 786
 787                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 788
 789                 if (pixbuf) {
 790                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 791                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 792                         g_object_unref (scaled_pixbuf);
 793                         g_object_unref (pixbuf);
 794                 } else {
 795                         gtk_image_set_from_stock (GTK_IMAGE (image),
 796                                                   "gtk-dialog-question",
 797                                                   GTK_ICON_SIZE_DIALOG);
 798                 }
 799         }
 800
 801         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 802 }
 803
 804 static void
 805 avatar_chooser_response_cb (GtkWidget            *widget,
 806                             gint                  response,
 807                             EmpathyAvatarChooser *chooser)
 808 {
 809         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 810
 811         if (response == GTK_RESPONSE_CANCEL) {
 812                 goto out;
 813         }
 814
 815         /* Check if we went non-ready since displaying the dialog. */
 816         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 817                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 818                 goto out;
 819         }
 820
 821         if (response == GTK_RESPONSE_OK) {
 822                 gchar *filename;
 823                 gchar *path;
 824
 825                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 826                 avatar_chooser_set_image_from_file (chooser, filename);
 827                 g_free (filename);
 828
 829                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 830                 if (path) {
 831                         empathy_conf_set_string (empathy_conf_get (),
 832                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 833                                                  path);
 834                         g_free (path);
 835                 }
 836         }
 837         else if (response == GTK_RESPONSE_NO) {
 838                 /* This corresponds to "No Image", not to "Cancel" */
 839                 avatar_chooser_clear_image (chooser);
 840         }
 841
 842 out:
 843         gtk_widget_destroy (widget);
 844 }
 845
 846 static void
 847 avatar_chooser_clicked_cb (GtkWidget            *button,
 848                            EmpathyAvatarChooser *chooser)
 849 {
 850         GtkFileChooser *chooser_dialog;
 851         GtkWidget      *image;
 852         gchar          *saved_dir = NULL;
 853         const gchar    *default_dir = DEFAULT_DIR;
 854         const gchar    *pics_dir;
 855         GtkFileFilter  *filter;
 856
 857         chooser_dialog = GTK_FILE_CHOOSER (
 858                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 859                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 860                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 861                                              _("No Image"),
 862                                              GTK_RESPONSE_NO,
 863                                              GTK_STOCK_CANCEL,
 864                                              GTK_RESPONSE_CANCEL,
 865                                              GTK_STOCK_OPEN,
 866                                              GTK_RESPONSE_OK,
 867                                              NULL));
 868
 869         /* Get special dirs */
 870         empathy_conf_get_string (empathy_conf_get (),
 871                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 872                                  &saved_dir);
 873         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 874                 g_free (saved_dir);
 875                 saved_dir = NULL;
 876         }
 877         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 878                 default_dir = NULL;
 879         }
 880         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 881         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 882                 pics_dir = NULL;
 883         }
 884
 885         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 886         if (saved_dir) {
 887                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 888         }
 889         else if (pics_dir) {
 890                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 891         }
 892         else if (default_dir) {
 893                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 894         } else {
 895                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 896         }
 897
 898         /* Add shortcuts to special dirs */
 899         if (saved_dir) {
 900                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 901         }
 902         else if (pics_dir) {
 903                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 904         }
 905         if (default_dir) {
 906                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 907         }
 908
 909         /* Setup preview image */
 910         image = gtk_image_new ();
 911         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 912         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 913         gtk_widget_show (image);
 914         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 915         g_signal_connect (chooser_dialog, "update-preview",
 916                           G_CALLBACK (avatar_chooser_update_preview_cb),
 917                           chooser);
 918
 919         /* Setup filers */
 920         filter = gtk_file_filter_new ();
 921         gtk_file_filter_set_name (filter, _("Images"));
 922         gtk_file_filter_add_pixbuf_formats (filter);
 923         gtk_file_chooser_add_filter (chooser_dialog, filter);
 924         filter = gtk_file_filter_new ();
 925         gtk_file_filter_set_name (filter, _("All Files"));
 926         gtk_file_filter_add_pattern(filter, "*");
 927         gtk_file_chooser_add_filter (chooser_dialog, filter);
 928
 929         /* Setup response */
 930         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 931         g_signal_connect (chooser_dialog, "response",
 932                           G_CALLBACK (avatar_chooser_response_cb),
 933                           chooser);
 934
 935         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 936         g_free (saved_dir);
 937 }
 938
 939 GtkWidget *
 940 empathy_avatar_chooser_new ()
 941 {
 942         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 943 }
 944
 945 void
 946 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 947                             EmpathyAvatar        *avatar)
 948 {
 949         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 950
 951         if (avatar != NULL) {
 952                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
 953         } else {
 954                 avatar_chooser_clear_image (chooser);
 955         }
 956 }
 957
 958 void
 959 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 960                                        const gchar          **data,
 961                                        gsize                 *data_size,
 962                                        const gchar          **mime_type)
 963 {
 964         EmpathyAvatarChooserPriv *priv;
 965
 966         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 967
 968         priv = GET_PRIV (chooser);
 969
 970         if (priv->avatar != NULL) {
 971                 if (data != NULL) {
 972                         *data = priv->avatar->data;
 973                 }
 974                 if (data_size != NULL) {
 975                         *data_size = priv->avatar->len;
 976                 }
 977                 if (mime_type != NULL) {
 978                         *mime_type = priv->avatar->format;
 979                 }
 980         } else {
 981                 if (data != NULL) {
 982                         *data = NULL;
 983                 }
 984                 if (data_size != NULL) {
 985                         *data_size = 0;
 986                 }
 987                 if (mime_type != NULL) {
 988                         *mime_type = NULL;
 989                 }
 990         }
 991 }
 992