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-lib.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-utils.h>
  33 #include <libempathy/empathy-tp-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         EmpathyTpContactFactory *factory;
  49         TpConnection            *connection;
  50         GtkFileChooser          *chooser_dialog;
  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_connection        (EmpathyAvatarChooser *self,
  59                                                         TpConnection         *connection);
  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_CONNECTION
  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_CONNECTION:
 128                 g_value_set_object (value, priv->connection);
 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_CONNECTION:
 146                 avatar_chooser_set_connection (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 ("connection",
 174                                           "TpConnection",
 175                                           "TpConnection whose avatar should be "
 176                                           "shown and modified by this widget",
 177                                           TP_TYPE_CONNECTION,
 178                                           G_PARAM_READWRITE |
 179                                           G_PARAM_STATIC_STRINGS);
 180         g_object_class_install_property (object_class,
 181                                          PROP_CONNECTION,
 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         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_connection (EMPATHY_AVATAR_CHOOSER (object), NULL);
 227         g_assert (priv->connection == NULL);
 228         g_assert (priv->factory == NULL);
 229
 230         if (priv->avatar != NULL) {
 231                 empathy_avatar_unref (priv->avatar);
 232         }
 233
 234         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 235 }
 236
 237 static void
 238 avatar_chooser_set_connection (EmpathyAvatarChooser *self,
 239                                TpConnection         *connection)
 240 {
 241         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 242
 243         if (priv->connection != NULL) {
 244                 g_object_unref (priv->connection);
 245                 priv->connection = NULL;
 246
 247                 g_object_unref (priv->factory);
 248                 priv->factory = NULL;
 249         }
 250
 251         if (connection != NULL) {
 252                 priv->connection = g_object_ref (connection);
 253                 priv->factory = empathy_tp_contact_factory_dup_singleton (connection);
 254         }
 255 }
 256
 257 static void
 258 avatar_chooser_error_show (EmpathyAvatarChooser *chooser,
 259                            const gchar          *primary_text,
 260                            const gchar          *secondary_text)
 261 {
 262         GtkWidget *parent;
 263         GtkWidget *dialog;
 264
 265         parent = gtk_widget_get_toplevel (GTK_WIDGET (chooser));
 266         if (!GTK_IS_WINDOW (parent)) {
 267                 parent = NULL;
 268         }
 269
 270         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 271                                          GTK_DIALOG_MODAL,
 272                                          GTK_MESSAGE_WARNING,
 273                                          GTK_BUTTONS_CLOSE,
 274                                          "%s", primary_text);
 275
 276         if (secondary_text != NULL) {
 277                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 278                                                           "%s", secondary_text);
 279         }
 280
 281         g_signal_connect (dialog, "response",
 282                           G_CALLBACK (gtk_widget_destroy), NULL);
 283         gtk_widget_show (dialog);
 284
 285 }
 286
 287 static gboolean
 288 str_in_strv (const 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 avatar_chooser_need_mime_type_conversion (const gchar *current_mime_type,
 309                                           gchar      **accepted_mime_types,
 310                                           gchar      **satisfactory_format_name,
 311                                           gchar      **satisfactory_mime_type)
 312 {
 313         gchar   *good_mime_types[] = {"image/jpeg", "image/png", NULL};
 314         guint    i;
 315         GSList  *formats, *l;
 316         gboolean found = FALSE;
 317
 318         *satisfactory_format_name = NULL;
 319         *satisfactory_mime_type = NULL;
 320
 321         /* If there is no accepted format there is nothing we can do */
 322         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 323                 return TRUE;
 324         }
 325
 326         /* If the current mime type is good and accepted, don't change it!
 327          * jpeg is compress better pictures, but png is better for logos and
 328          * could have an alpha layer. */
 329         if (str_in_strv (current_mime_type, good_mime_types) &&
 330             str_in_strv (current_mime_type, accepted_mime_types)) {
 331                 *satisfactory_mime_type = g_strdup (current_mime_type);
 332                 *satisfactory_format_name = g_strdup (current_mime_type +
 333                                                       strlen ("image/"));
 334                 return FALSE;
 335         }
 336
 337         /* The current mime type is either not accepted or not good to use.
 338          * Check if one of the good format is supported... */
 339         for (i = 0; good_mime_types[i] != NULL;  i++) {
 340                 if (str_in_strv (good_mime_types[i], accepted_mime_types)) {
 341                         *satisfactory_mime_type = g_strdup (good_mime_types[i]);
 342                         *satisfactory_format_name = g_strdup (good_mime_types[i] +
 343                                                               strlen ("image/"));
 344                         return TRUE;
 345                 }
 346         }
 347
 348         /* Pick the first supported format we can write */
 349         formats = gdk_pixbuf_get_formats ();
 350         for (l = formats; !found && l != NULL; l = l->next) {
 351                 GdkPixbufFormat *format = l->data;
 352                 gchar **format_mime_types;
 353                 gchar **iter;
 354
 355                 if (!gdk_pixbuf_format_is_writable (format)) {
 356                         continue;
 357                 }
 358
 359                 format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 360                 for (iter = format_mime_types; *iter != NULL; iter++) {
 361                         if (str_in_strv (*iter, accepted_mime_types)) {
 362                                 *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
 363                                 *satisfactory_mime_type = g_strdup (*iter);
 364                                 found = TRUE;
 365                                 break;
 366                         }
 367                 }
 368                 g_strfreev (format_mime_types);
 369         }
 370         g_slist_free (formats);
 371
 372         return TRUE;
 373 }
 374
 375 static EmpathyAvatar *
 376 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 377                                         GdkPixbuf            *pixbuf,
 378                                         EmpathyAvatar        *avatar)
 379 {
 380         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 381         guint                     max_width = 0, max_height = 0, max_size = 0;
 382         gchar                   **mime_types = NULL;
 383         gboolean                  needs_conversion = FALSE;
 384         gint                      width, height;
 385         gchar                    *new_format_name = NULL;
 386         gchar                    *new_mime_type = NULL;
 387         gdouble                   min_factor, max_factor;
 388         gdouble                   factor;
 389         gchar                    *converted_image_data = NULL;
 390         gsize                     converted_image_size = 0;
 391
 392         g_object_get (priv->factory,
 393                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 394                 "avatar-max-width", &max_width,
 395                 "avatar-max-height", &max_height,
 396                 "avatar-max-size", &max_size,
 397                 NULL);
 398
 399         /* Smaller is the factor, smaller will be the image.
 400          * 0 is an empty image, 1 is the full size. */
 401         min_factor = 0;
 402         max_factor = 1;
 403         factor = 1;
 404
 405         /* Check if we need to convert to another image format */
 406         if (avatar_chooser_need_mime_type_conversion (avatar->format,
 407                                                       mime_types,
 408                                                       &new_format_name,
 409                                                       &new_mime_type)) {
 410                 DEBUG ("Format conversion needed, we'll use mime type '%s' "
 411                        "and format name '%s'. Current mime type is '%s'",
 412                        new_mime_type, new_format_name, avatar->format);
 413                 needs_conversion = TRUE;
 414         }
 415         g_strfreev (mime_types);
 416
 417         /* If there is no format we can use, report error to the user. */
 418         if (new_mime_type == NULL || new_format_name == NULL) {
 419                 avatar_chooser_error_show (chooser, _("Couldn't convert image"),
 420                                 _("None of the accepted image formats is "
 421                                   "supported on your system"));
 422                 return NULL;
 423         }
 424
 425         /* If width or height are too big, it needs converting. */
 426         width = gdk_pixbuf_get_width (pixbuf);
 427         height = gdk_pixbuf_get_height (pixbuf);
 428         if ((max_width > 0 && width > max_width) ||
 429             (max_height > 0 && height > max_height)) {
 430                 gdouble h_factor, v_factor;
 431
 432                 h_factor = (gdouble) max_width / width;
 433                 v_factor = (gdouble) max_height / height;
 434                 factor = max_factor = MIN (h_factor, v_factor);
 435
 436                 DEBUG ("Image dimensions (%dx%d) are too big. Max is %dx%d.",
 437                        width, height, max_width, max_height);
 438
 439                 needs_conversion = TRUE;
 440         }
 441
 442         /* If the data len is too big and no other conversion is needed,
 443          * try with a lower factor. */
 444         if (max_size > 0 && avatar->len > max_size && !needs_conversion) {
 445                 DEBUG ("Image data (%"G_GSIZE_FORMAT" bytes) is too big "
 446                        "(max is %u bytes), conversion needed.",
 447                        avatar->len, max_size);
 448
 449                 factor = 0.5;
 450                 needs_conversion = TRUE;
 451         }
 452
 453         /* If no conversion is needed, return the avatar */
 454         if (!needs_conversion) {
 455                 g_free (new_format_name);
 456                 g_free (new_mime_type);
 457                 return empathy_avatar_ref (avatar);
 458         }
 459
 460         do {
 461                 GdkPixbuf *pixbuf_scaled = NULL;
 462                 gboolean   saved;
 463                 gint       new_width, new_height;
 464                 GError    *error = NULL;
 465
 466                 g_free (converted_image_data);
 467
 468                 if (factor != 1) {
 469                         new_width = width * factor;
 470                         new_height = height * factor;
 471                         pixbuf_scaled = gdk_pixbuf_scale_simple (pixbuf,
 472                                                                  new_width,
 473                                                                  new_height,
 474                                                                  GDK_INTERP_HYPER);
 475                 } else {
 476                         new_width = width;
 477                         new_height = height;
 478                         pixbuf_scaled = g_object_ref (pixbuf);
 479                 }
 480
 481                 DEBUG ("Trying with factor %f (%dx%d) and format %s...", factor,
 482                         new_width, new_height, new_format_name);
 483
 484                 saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled,
 485                                                    &converted_image_data,
 486                                                    &converted_image_size,
 487                                                    new_format_name,
 488                                                    &error, NULL);
 489                 g_object_unref (pixbuf_scaled);
 490
 491                 if (!saved) {
 492                         g_free (new_format_name);
 493                         g_free (new_mime_type);
 494                         avatar_chooser_error_show (chooser,
 495                                 _("Couldn't convert image"),
 496                                 error ? error->message : NULL);
 497                         g_clear_error (&error);
 498                         return NULL;
 499                 }
 500
 501                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 502                         converted_image_size);
 503
 504                 if (max_size == 0)
 505                         break;
 506
 507                 /* Make a binary search for the bigest factor that produce
 508                  * an image data size less than max_size */
 509                 if (converted_image_size > max_size)
 510                         max_factor = factor;
 511                 if (converted_image_size < max_size)
 512                         min_factor = factor;
 513                 factor = (min_factor + max_factor)/2;
 514
 515                 /* We are done if either:
 516                  * - min_factor == max_factor. That happens if we resized to
 517                  *   the max required dimension and the produced data size is
 518                  *   less than max_size.
 519                  * - The data size is close enough to max_size. Here we accept
 520                  *   a difference of 1k.
 521                  */
 522         } while (min_factor != max_factor &&
 523                  ABS (max_size - converted_image_size) > 1024);
 524         g_free (new_format_name);
 525
 526         /* Takes ownership of new_mime_type and converted_image_data */
 527         avatar = empathy_avatar_new (converted_image_data,
 528                 converted_image_size, new_mime_type, NULL);
 529
 530         return avatar;
 531 }
 532
 533 static void
 534 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 535 {
 536         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 537         GtkWidget *image;
 538
 539         if (priv->avatar != NULL) {
 540                 empathy_avatar_unref (priv->avatar);
 541                 priv->avatar = NULL;
 542         }
 543
 544         image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
 545         gtk_button_set_image (GTK_BUTTON (chooser), image);
 546         g_signal_emit (chooser, signals[CHANGED], 0);
 547 }
 548
 549 static void
 550 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 551                                     gchar                *data,
 552                                     gsize                 size,
 553                                     gboolean              set_locally)
 554 {
 555         GdkPixbuf     *pixbuf;
 556         EmpathyAvatar *avatar = NULL;
 557         gchar         *mime_type = NULL;
 558
 559         if (data == NULL) {
 560                 avatar_chooser_clear_image (chooser);
 561                 return;
 562         }
 563
 564         pixbuf = empathy_pixbuf_from_data_and_mime (data, size, &mime_type);
 565         if (pixbuf == NULL) {
 566                 g_free (data);
 567                 return;
 568         }
 569
 570         /* avatar takes ownership of data and mime_type */
 571         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 572
 573         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 574 }
 575
 576 static void
 577 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 578                                       EmpathyAvatar        *avatar,
 579                                       gboolean              set_locally)
 580 {
 581         GdkPixbuf *pixbuf;
 582         gchar     *mime_type = NULL;
 583
 584         g_assert (avatar != NULL);
 585
 586         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 587                                                     avatar->len,
 588                                                     &mime_type);
 589         if (pixbuf == NULL) {
 590                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 591                 return;
 592         }
 593
 594         if (avatar->format == NULL) {
 595                 avatar->format = mime_type;
 596         } else {
 597                 if (strcmp (mime_type, avatar->format)) {
 598                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 599                                 avatar->format, mime_type);
 600                 }
 601                 g_free (mime_type);
 602         }
 603
 604         empathy_avatar_ref (avatar);
 605
 606         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 607 }
 608
 609 static void
 610 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 611                           EmpathyAvatar        *avatar,
 612                           GdkPixbuf            *pixbuf,
 613                           gboolean              set_locally)
 614 {
 615         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 616         GdkPixbuf                *pixbuf_view;
 617         GtkWidget                *image;
 618
 619         g_assert (avatar != NULL);
 620         g_assert (pixbuf != NULL);
 621
 622         if (set_locally) {
 623                 EmpathyAvatar *conv;
 624
 625                 conv = avatar_chooser_maybe_convert_and_scale (chooser,
 626                         pixbuf, avatar);
 627                 empathy_avatar_unref (avatar);
 628
 629                 if (conv == NULL) {
 630                         /* An error occured; don't change the avatar. */
 631                         return;
 632                 }
 633
 634                 avatar = conv;
 635         }
 636
 637         if (priv->avatar != NULL) {
 638                 empathy_avatar_unref (priv->avatar);
 639         }
 640         priv->avatar = avatar;
 641
 642         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 643         image = gtk_image_new_from_pixbuf (pixbuf_view);
 644
 645         gtk_button_set_image (GTK_BUTTON (chooser), image);
 646         g_signal_emit (chooser, signals[CHANGED], 0);
 647
 648         g_object_unref (pixbuf_view);
 649         g_object_unref (pixbuf);
 650 }
 651
 652 static void
 653 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 654                                     const gchar          *filename)
 655 {
 656         gchar  *image_data = NULL;
 657         gsize   image_size = 0;
 658         GError *error = NULL;
 659
 660         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 661                 DEBUG ("Failed to load image from '%s': %s", filename,
 662                         error ? error->message : "No error given");
 663
 664                 g_clear_error (&error);
 665                 return;
 666         }
 667
 668         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 669 }
 670
 671 static gboolean
 672 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 673                               GdkDragContext     *context,
 674                               gint                x,
 675                               gint                y,
 676                               guint               time,
 677                               EmpathyAvatarChooser *chooser)
 678 {
 679         EmpathyAvatarChooserPriv *priv;
 680         GList                  *p;
 681
 682         priv = GET_PRIV (chooser);
 683
 684         for (p = context->targets; p != NULL; p = p->next) {
 685                 gchar *possible_type;
 686
 687                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 688
 689                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 690                         g_free (possible_type);
 691                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 692
 693                         return TRUE;
 694                 }
 695
 696                 g_free (possible_type);
 697         }
 698
 699         return FALSE;
 700 }
 701
 702 static void
 703 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 704                              GdkDragContext     *context,
 705                              guint               time,
 706                              EmpathyAvatarChooser *chooser)
 707 {
 708 }
 709
 710 static gboolean
 711 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 712                             GdkDragContext     *context,
 713                             gint                x,
 714                             gint                y,
 715                             guint               time,
 716                             EmpathyAvatarChooser *chooser)
 717 {
 718         EmpathyAvatarChooserPriv *priv;
 719         GList                  *p;
 720
 721         priv = GET_PRIV (chooser);
 722
 723         if (context->targets == NULL) {
 724                 return FALSE;
 725         }
 726
 727         for (p = context->targets; p != NULL; p = p->next) {
 728                 char *possible_type;
 729
 730                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 731                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 732                         g_free (possible_type);
 733                         gtk_drag_get_data (widget, context,
 734                                            GDK_POINTER_TO_ATOM (p->data),
 735                                            time);
 736
 737                         return TRUE;
 738                 }
 739
 740                 g_free (possible_type);
 741         }
 742
 743         return FALSE;
 744 }
 745
 746 static void
 747 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 748                                      GdkDragContext     *context,
 749                                      gint                x,
 750                                      gint                y,
 751                                      GtkSelectionData   *selection_data,
 752                                      guint               info,
 753                                      guint               time,
 754                                      EmpathyAvatarChooser *chooser)
 755 {
 756         gchar    *target_type;
 757         gboolean  handled = FALSE;
 758
 759         target_type = gdk_atom_name (selection_data->target);
 760         if (!strcmp (target_type, URI_LIST_TYPE)) {
 761                 GFile            *file;
 762                 GFileInputStream *input_stream;
 763                 gchar            *nl;
 764                 gchar            *data = NULL;
 765
 766                 nl = strstr (selection_data->data, "\r\n");
 767                 if (nl) {
 768                         gchar *uri;
 769
 770                         uri = g_strndup (selection_data->data,
 771                                          nl - (gchar*) selection_data->data);
 772
 773                         file = g_file_new_for_uri (uri);
 774                         g_free (uri);
 775                 } else {
 776                         file = g_file_new_for_uri (selection_data->data);
 777                 }
 778
 779                 input_stream = g_file_read (file, NULL, NULL);
 780
 781                 if (input_stream != NULL) {
 782                         GFileInfo *info;
 783
 784                         info = g_file_query_info (file,
 785                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 786                                                   0, NULL, NULL);
 787                         if (info != NULL) {
 788                                 goffset size;
 789                                 gssize bytes_read;
 790
 791                                 size = g_file_info_get_size (info);
 792                                 data = g_malloc (size);
 793
 794                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 795                                                                   data, size,
 796                                                                   NULL, NULL);
 797                                 if (bytes_read != -1) {
 798                                         avatar_chooser_set_image_from_data (
 799                                                 chooser, data,
 800                                                 (gsize) bytes_read,
 801                                                 TRUE);
 802                                         handled = TRUE;
 803                                 }
 804
 805                                 g_free (data);
 806                                 g_object_unref (info);
 807                         }
 808
 809                         g_object_unref (input_stream);
 810                 }
 811
 812                 g_object_unref (file);
 813         }
 814
 815         gtk_drag_finish (context, handled, FALSE, time);
 816 }
 817
 818 static void
 819 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 820                                   EmpathyAvatarChooser *chooser)
 821 {
 822         gchar *filename;
 823
 824         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 825
 826         if (filename) {
 827                 GtkWidget *image;
 828                 GdkPixbuf *pixbuf = NULL;
 829                 GdkPixbuf *scaled_pixbuf;
 830
 831                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 832
 833                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 834
 835                 if (pixbuf) {
 836                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 837                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 838                         g_object_unref (scaled_pixbuf);
 839                         g_object_unref (pixbuf);
 840                 } else {
 841                         gtk_image_set_from_stock (GTK_IMAGE (image),
 842                                                   "gtk-dialog-question",
 843                                                   GTK_ICON_SIZE_DIALOG);
 844                 }
 845
 846                 g_free (filename);
 847         }
 848
 849         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 850 }
 851
 852 static void
 853 avatar_chooser_response_cb (GtkWidget            *widget,
 854                             gint                  response,
 855                             EmpathyAvatarChooser *chooser)
 856 {
 857         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 858
 859         priv->chooser_dialog = NULL;
 860
 861         if (response == GTK_RESPONSE_OK) {
 862                 gchar *filename;
 863                 gchar *path;
 864
 865                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 866                 avatar_chooser_set_image_from_file (chooser, filename);
 867                 g_free (filename);
 868
 869                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 870                 if (path) {
 871                         empathy_conf_set_string (empathy_conf_get (),
 872                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 873                                                  path);
 874                         g_free (path);
 875                 }
 876         }
 877         else if (response == GTK_RESPONSE_NO) {
 878                 /* This corresponds to "No Image", not to "Cancel" */
 879                 avatar_chooser_clear_image (chooser);
 880         }
 881
 882         gtk_widget_destroy (widget);
 883 }
 884
 885 static void
 886 avatar_chooser_clicked_cb (GtkWidget            *button,
 887                            EmpathyAvatarChooser *chooser)
 888 {
 889         GtkFileChooser *chooser_dialog;
 890         GtkWidget      *image;
 891         gchar          *saved_dir = NULL;
 892         const gchar    *default_dir = DEFAULT_DIR;
 893         const gchar    *pics_dir;
 894         GtkFileFilter  *filter;
 895         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 896
 897         if (priv->chooser_dialog) {
 898                 gtk_window_present (GTK_WINDOW (priv->chooser_dialog));
 899                 return;
 900         }
 901
 902         priv->chooser_dialog = GTK_FILE_CHOOSER (
 903                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 904                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 905                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 906                                              _("No Image"),
 907                                              GTK_RESPONSE_NO,
 908                                              GTK_STOCK_CANCEL,
 909                                              GTK_RESPONSE_CANCEL,
 910                                              GTK_STOCK_OPEN,
 911                                              GTK_RESPONSE_OK,
 912                                              NULL));
 913         chooser_dialog = priv->chooser_dialog;
 914         gtk_window_set_destroy_with_parent (GTK_WINDOW (chooser_dialog), TRUE);
 915
 916         /* Get special dirs */
 917         empathy_conf_get_string (empathy_conf_get (),
 918                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 919                                  &saved_dir);
 920         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 921                 g_free (saved_dir);
 922                 saved_dir = NULL;
 923         }
 924         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 925                 default_dir = NULL;
 926         }
 927         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 928         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 929                 pics_dir = NULL;
 930         }
 931
 932         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 933         if (saved_dir) {
 934                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 935         }
 936         else if (pics_dir) {
 937                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 938         }
 939         else if (default_dir) {
 940                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 941         } else {
 942                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 943         }
 944
 945         /* Add shortcuts to special dirs */
 946         if (saved_dir) {
 947                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 948         }
 949         else if (pics_dir) {
 950                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 951         }
 952         if (default_dir) {
 953                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 954         }
 955
 956         /* Setup preview image */
 957         image = gtk_image_new ();
 958         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 959         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 960         gtk_widget_show (image);
 961         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 962         g_signal_connect (chooser_dialog, "update-preview",
 963                           G_CALLBACK (avatar_chooser_update_preview_cb),
 964                           chooser);
 965
 966         /* Setup filers */
 967         filter = gtk_file_filter_new ();
 968         gtk_file_filter_set_name (filter, _("Images"));
 969         gtk_file_filter_add_pixbuf_formats (filter);
 970         gtk_file_chooser_add_filter (chooser_dialog, filter);
 971         filter = gtk_file_filter_new ();
 972         gtk_file_filter_set_name (filter, _("All Files"));
 973         gtk_file_filter_add_pattern(filter, "*");
 974         gtk_file_chooser_add_filter (chooser_dialog, filter);
 975
 976         /* Setup response */
 977         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 978         g_signal_connect (chooser_dialog, "response",
 979                           G_CALLBACK (avatar_chooser_response_cb),
 980                           chooser);
 981
 982         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 983         g_free (saved_dir);
 984 }
 985
 986 GtkWidget *
 987 empathy_avatar_chooser_new ()
 988 {
 989         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 990 }
 991
 992 void
 993 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 994                             EmpathyAvatar        *avatar)
 995 {
 996         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 997
 998         if (avatar != NULL) {
 999                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
1000         } else {
1001                 avatar_chooser_clear_image (chooser);
1002         }
1003 }
1004
1005 void
1006 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
1007                                        const gchar          **data,
1008                                        gsize                 *data_size,
1009                                        const gchar          **mime_type)
1010 {
1011         EmpathyAvatarChooserPriv *priv;
1012
1013         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1014
1015         priv = GET_PRIV (chooser);
1016
1017         if (priv->avatar != NULL) {
1018                 if (data != NULL) {
1019                         *data = priv->avatar->data;
1020                 }
1021                 if (data_size != NULL) {
1022                         *data_size = priv->avatar->len;
1023                 }
1024                 if (mime_type != NULL) {
1025                         *mime_type = priv->avatar->format;
1026                 }
1027         } else {
1028                 if (data != NULL) {
1029                         *data = NULL;
1030                 }
1031                 if (data_size != NULL) {
1032                         *data_size = 0;
1033                 }
1034                 if (mime_type != NULL) {
1035                         *mime_type = NULL;
1036                 }
1037         }
1038 }
1039