libempathy-gtk/empathy-avatar-chooser.c

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