libempathy-gtk/empathy-avatar-chooser.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2006-2007 Imendio AB.
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Authors: Based on Novell's e-image-chooser.
  21  *          Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <string.h>
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-utils.h>
  33 #include <libempathy/empathy-contact-factory.h>
  34
  35 #include "empathy-avatar-chooser.h"
  36 #include "empathy-conf.h"
  37 #include "empathy-ui-utils.h"
  38
  39 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  40 #include <libempathy/empathy-debug.h>
  41
  42 #define AVATAR_SIZE_SAVE 96
  43 #define AVATAR_SIZE_VIEW 64
  44 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  45
  46 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  47 typedef struct {
  48         EmpathyContactFactory   *contact_factory;
  49         McAccount               *account;
  50         EmpathyTpContactFactory *tp_contact_factory;
  51
  52         gulong ready_handler_id;
  53
  54         EmpathyAvatar *avatar;
  55 } EmpathyAvatarChooserPriv;
  56
  57 static void       avatar_chooser_finalize              (GObject              *object);
  58 static void       avatar_chooser_set_account           (EmpathyAvatarChooser *self,
  59                                                         McAccount            *account);
  60 static void       avatar_chooser_set_image             (EmpathyAvatarChooser *chooser,
  61                                                         EmpathyAvatar        *avatar,
  62                                                         GdkPixbuf            *pixbuf,
  63                                                         gboolean              set_locally);
  64 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  65                                                         GdkDragContext       *context,
  66                                                         gint                  x,
  67                                                         gint                  y,
  68                                                         guint                 time,
  69                                                         EmpathyAvatarChooser *chooser);
  70 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  71                                                         GdkDragContext       *context,
  72                                                         guint                 time,
  73                                                         EmpathyAvatarChooser *chooser);
  74 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  75                                                         GdkDragContext       *context,
  76                                                         gint                  x,
  77                                                         gint                  y,
  78                                                         guint                 time,
  79                                                         EmpathyAvatarChooser *chooser);
  80 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  81                                                         GdkDragContext       *context,
  82                                                         gint                  x,
  83                                                         gint                  y,
  84                                                         GtkSelectionData     *selection_data,
  85                                                         guint                 info,
  86                                                         guint                 time,
  87                                                         EmpathyAvatarChooser *chooser);
  88 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  89                                                         EmpathyAvatarChooser *chooser);
  90
  91 enum {
  92         CHANGED,
  93         LAST_SIGNAL
  94 };
  95
  96 enum {
  97         PROP_0,
  98         PROP_ACCOUNT
  99 };
 100
 101 static guint signals [LAST_SIGNAL];
 102
 103 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
 104
 105 /*
 106  * Drag and drop stuff
 107  */
 108 #define URI_LIST_TYPE "text/uri-list"
 109
 110 enum DndTargetType {
 111         DND_TARGET_TYPE_URI_LIST
 112 };
 113
 114 static const GtkTargetEntry drop_types[] = {
 115         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 116 };
 117
 118 static void
 119 avatar_chooser_get_property (GObject    *object,
 120                              guint       param_id,
 121                              GValue     *value,
 122                              GParamSpec *pspec)
 123 {
 124         EmpathyAvatarChooserPriv *priv = GET_PRIV (object);
 125
 126         switch (param_id) {
 127         case PROP_ACCOUNT:
 128                 g_value_set_object (value, priv->account);
 129                 break;
 130         default:
 131                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 132                 break;
 133         }
 134 }
 135
 136 static void
 137 avatar_chooser_set_property (GObject      *object,
 138                              guint         param_id,
 139                              const GValue *value,
 140                              GParamSpec   *pspec)
 141 {
 142         EmpathyAvatarChooser *self = EMPATHY_AVATAR_CHOOSER (object);
 143
 144         switch (param_id) {
 145         case PROP_ACCOUNT:
 146                 avatar_chooser_set_account (self, g_value_get_object (value));
 147                 break;
 148         default:
 149                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 150                 break;
 151         }
 152 }
 153
 154 static void
 155 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 156 {
 157         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 158         GParamSpec *param_spec;
 159
 160         object_class->finalize = avatar_chooser_finalize;
 161         object_class->get_property = avatar_chooser_get_property;
 162         object_class->set_property = avatar_chooser_set_property;
 163
 164         signals[CHANGED] =
 165                 g_signal_new ("changed",
 166                               G_TYPE_FROM_CLASS (klass),
 167                               G_SIGNAL_RUN_LAST,
 168                               0,
 169                               NULL, NULL,
 170                               g_cclosure_marshal_VOID__VOID,
 171                               G_TYPE_NONE, 0);
 172
 173         param_spec = g_param_spec_object ("account",
 174                                           "McAccount",
 175                                           "McAccount whose avatar should be "
 176                                           "shown and modified by this widget",
 177                                           MC_TYPE_ACCOUNT,
 178                                           G_PARAM_READWRITE |
 179                                           G_PARAM_STATIC_STRINGS);
 180         g_object_class_install_property (object_class,
 181                                          PROP_ACCOUNT,
 182                                          param_spec);
 183
 184         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 185 }
 186
 187 static void
 188 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 189 {
 190         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 191                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 192
 193         chooser->priv = priv;
 194         gtk_drag_dest_set (GTK_WIDGET (chooser),
 195                            GTK_DEST_DEFAULT_ALL,
 196                            drop_types,
 197                            G_N_ELEMENTS (drop_types),
 198                            GDK_ACTION_COPY);
 199
 200         g_signal_connect (chooser, "drag-motion",
 201                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 202                           chooser);
 203         g_signal_connect (chooser, "drag-leave",
 204                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 205                           chooser);
 206         g_signal_connect (chooser, "drag-drop",
 207                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 208                           chooser);
 209         g_signal_connect (chooser, "drag-data-received",
 210                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 211                           chooser);
 212         g_signal_connect (chooser, "clicked",
 213                           G_CALLBACK (avatar_chooser_clicked_cb),
 214                           chooser);
 215
 216         priv->contact_factory = empathy_contact_factory_new ();
 217
 218         empathy_avatar_chooser_set (chooser, NULL);
 219 }
 220
 221 static void
 222 avatar_chooser_finalize (GObject *object)
 223 {
 224         EmpathyAvatarChooserPriv *priv;
 225
 226         priv = GET_PRIV (object);
 227
 228         avatar_chooser_set_account (EMPATHY_AVATAR_CHOOSER (object), NULL);
 229         g_assert (priv->account == NULL);
 230         g_assert (priv->tp_contact_factory == NULL);
 231
 232         g_object_unref (priv->contact_factory);
 233
 234         if (priv->avatar != NULL) {
 235                 empathy_avatar_unref (priv->avatar);
 236         }
 237
 238         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 239 }
 240
 241 static void
 242 avatar_chooser_tp_cf_ready_cb (EmpathyTpContactFactory *tp_cf,
 243                                GParamSpec              *unused,
 244                                EmpathyAvatarChooser    *self)
 245 {
 246         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 247         gboolean ready;
 248
 249         /* sanity check that we're listening on the right ETpCF */
 250         g_assert (priv->tp_contact_factory == tp_cf);
 251
 252         ready = empathy_tp_contact_factory_is_ready (tp_cf);
 253         gtk_widget_set_sensitive (GTK_WIDGET (self), ready);
 254 }
 255
 256 static void
 257 avatar_chooser_set_account (EmpathyAvatarChooser *self,
 258                             McAccount            *account)
 259 {
 260         EmpathyAvatarChooserPriv *priv = GET_PRIV (self);
 261
 262         if (priv->account != NULL) {
 263                 g_object_unref (priv->account);
 264                 priv->account = NULL;
 265
 266                 g_assert (priv->tp_contact_factory != NULL);
 267
 268                 g_signal_handler_disconnect (priv->tp_contact_factory,
 269                         priv->ready_handler_id);
 270                 priv->ready_handler_id = 0;
 271
 272                 g_object_unref (priv->tp_contact_factory);
 273                 priv->tp_contact_factory = NULL;
 274         }
 275
 276         if (account != NULL) {
 277                 priv->account = g_object_ref (account);
 278                 priv->tp_contact_factory = g_object_ref (
 279                         empathy_contact_factory_get_tp_factory (
 280                                 priv->contact_factory, priv->account));
 281
 282                 priv->ready_handler_id = g_signal_connect (
 283                         priv->tp_contact_factory, "notify::ready",
 284                         G_CALLBACK (avatar_chooser_tp_cf_ready_cb), self);
 285                 avatar_chooser_tp_cf_ready_cb (priv->tp_contact_factory, NULL,
 286                         self);
 287         }
 288 }
 289
 290 static void
 291 avatar_chooser_error_show (EmpathyAvatarChooser *chooser,
 292                            const gchar          *primary_text,
 293                            const gchar          *secondary_text)
 294 {
 295         GtkWidget *parent;
 296         GtkWidget *dialog;
 297
 298         parent = gtk_widget_get_toplevel (GTK_WIDGET (chooser));
 299         if (!GTK_IS_WINDOW (parent)) {
 300                 parent = NULL;
 301         }
 302
 303         dialog = gtk_message_dialog_new (parent ? GTK_WINDOW (parent) : NULL,
 304                                          GTK_DIALOG_MODAL,
 305                                          GTK_MESSAGE_WARNING,
 306                                          GTK_BUTTONS_CLOSE,
 307                                          "%s", primary_text);
 308
 309         if (secondary_text != NULL) {
 310                 gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
 311                                                           "%s", secondary_text);
 312         }
 313
 314         g_signal_connect (dialog, "response",
 315                           G_CALLBACK (gtk_widget_destroy), NULL);
 316         gtk_widget_show (dialog);
 317
 318 }
 319
 320 static gboolean
 321 str_in_strv (gchar  *str,
 322              gchar **strv)
 323 {
 324         if (strv == NULL) {
 325                 return FALSE;
 326         }
 327
 328         while (*strv != NULL) {
 329                 if (g_str_equal (str, *strv)) {
 330                         return TRUE;
 331                 }
 332                 strv++;
 333         }
 334         return FALSE;
 335 }
 336
 337 /* The caller must free the strings stored in satisfactory_format_name and
 338  * satisfactory_mime_type.
 339  */
 340 static gboolean
 341 can_satisfy_mime_type_requirements (gchar **accepted_mime_types,
 342                                     gchar **satisfactory_format_name,
 343                                     gchar **satisfactory_mime_type)
 344 {
 345         gchar *name = NULL;
 346         gchar *type = NULL;
 347
 348         if (accepted_mime_types == NULL || *accepted_mime_types == NULL) {
 349                 return FALSE;
 350         }
 351
 352         /* Special-case png and jpeg to avoid accidentally saving to something
 353          * uncompressed like bmp. This assumes that we can write image/png and
 354          * image/jpeg; if this isn't true then something's really wrong with
 355          * GdkPixbuf.
 356          */
 357         if (str_in_strv ("image/jpeg", accepted_mime_types)) {
 358                 name = g_strdup ("jpeg");
 359                 type = g_strdup ("image/jpeg");
 360         } else if (str_in_strv ("image/png", accepted_mime_types)) {
 361                 name = g_strdup ("png");
 362                 type = g_strdup ("image/png");
 363         } else {
 364                 GSList  *formats, *l;
 365                 gboolean found = FALSE;
 366
 367                 formats = gdk_pixbuf_get_formats ();
 368                 for (l = formats; !found && l != NULL; l = l->next) {
 369                         GdkPixbufFormat *format = l->data;
 370                         gchar **format_mime_types;
 371                         gchar **iter;
 372
 373                         if (!gdk_pixbuf_format_is_writable (format)) {
 374                                 continue;
 375                         }
 376
 377                         format_mime_types = gdk_pixbuf_format_get_mime_types (format);
 378                         for (iter = format_mime_types; *iter != NULL; iter++) {
 379                                 if (str_in_strv (*iter, accepted_mime_types)) {
 380                                         name = gdk_pixbuf_format_get_name (format);
 381                                         type = g_strdup (*iter);
 382                                         found = TRUE;
 383                                         break;
 384                                 }
 385                         }
 386                         g_strfreev (format_mime_types);
 387                 }
 388
 389                 g_slist_free (formats);
 390         }
 391
 392         *satisfactory_format_name = name;
 393         *satisfactory_mime_type = type;
 394
 395         return name != NULL;
 396 }
 397
 398 static EmpathyAvatar *
 399 avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
 400                                         GdkPixbuf            *pixbuf,
 401                                         EmpathyAvatar        *avatar)
 402 {
 403         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 404         EmpathyTpContactFactory  *tp_cf = priv->tp_contact_factory;
 405         gint                      max_width = 0, max_height = 0, max_size = 0;
 406         gchar                   **mime_types = NULL;
 407         gboolean                  needs_conversion = FALSE;
 408         gint                      width, height;
 409         gchar                    *new_format_name = NULL;
 410         gchar                    *new_mime_type = NULL;
 411         gdouble                   min_factor, max_factor;
 412         gdouble                   factor;
 413         gchar                    *converted_image_data = NULL;
 414         gsize                     converted_image_size = 0;
 415
 416         /* This should only be called if the user is setting a new avatar,
 417          * which should only be allowed once the avatar requirements have been
 418          * discovered.
 419          */
 420         g_return_val_if_fail (tp_cf != NULL, NULL);
 421         g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
 422                 NULL);
 423
 424         g_object_get (tp_cf,
 425                 "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
 426                 "avatar-max-width", &max_width,
 427                 "avatar-max-height", &max_height,
 428                 "avatar-max-size", &max_size,
 429                 NULL);
 430
 431         /* Smaller is the factor, smaller will be the image.
 432          * 0 is an empty image, 1 is the full size. */
 433         min_factor = 0;
 434         max_factor = 1;
 435         factor = 1;
 436
 437         if (!can_satisfy_mime_type_requirements (mime_types, &new_format_name,
 438                                                  &new_mime_type)) {
 439                 avatar_chooser_error_show (chooser,
 440                         _("Couldn't convert image"),
 441                         _("None of the accepted image formats is supported on "
 442                           "your system"));
 443                 g_strfreev (mime_types);
 444                 return NULL;
 445         }
 446
 447         /* If the avatar is not already in the right type, it needs converting. */
 448         if (!str_in_strv (avatar->format, mime_types)) {
 449                 DEBUG ("Image format %s not supported by the protocol",
 450                         avatar->format);
 451
 452                 needs_conversion = TRUE;
 453         }
 454         g_strfreev (mime_types);
 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 %"G_GSIZE_FORMAT" 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
 521                 if (!saved) {
 522                         g_free (new_format_name);
 523                         g_free (new_mime_type);
 524                         avatar_chooser_error_show (chooser,
 525                                 _("Couldn't convert image"),
 526                                 error ? error->message : NULL);
 527                         g_clear_error (&error);
 528                         return NULL;
 529                 }
 530
 531                 DEBUG ("Produced an image data of %"G_GSIZE_FORMAT" bytes.",
 532                         converted_image_size);
 533
 534                 if (max_size == 0)
 535                         break;
 536
 537                 /* Make a binary search for the bigest factor that produce
 538                  * an image data size less than max_size */
 539                 if (converted_image_size > max_size)
 540                         max_factor = factor;
 541                 if (converted_image_size < max_size)
 542                         min_factor = factor;
 543                 factor = min_factor + (max_factor - min_factor)/2;
 544
 545                 /* We are done if either:
 546                  * - min_factor == max_factor. That happens if we resized to
 547                  *   the max required dimension and the produced data size is
 548                  *   less than max_size.
 549                  * - The data size is close enough to max_size. Here we accept
 550                  *   a difference of 1k.
 551                  */
 552         } while (min_factor != max_factor &&
 553                  ABS (max_size - converted_image_size) > 1024);
 554         g_free (new_format_name);
 555
 556         /* Takes ownership of new_mime_type and converted_image_data */
 557         avatar = empathy_avatar_new (converted_image_data,
 558                 converted_image_size, new_mime_type, NULL);
 559
 560         return avatar;
 561 }
 562
 563 static void
 564 avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
 565 {
 566         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 567         GtkWidget *image;
 568
 569         if (priv->avatar == NULL) {
 570                 return;
 571         }
 572
 573         empathy_avatar_unref (priv->avatar);
 574         priv->avatar = NULL;
 575
 576         image = gtk_image_new_from_icon_name ("stock_person", 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                 return;
 600         }
 601
 602         /* avatar takes ownership of data and mime_type */
 603         avatar = empathy_avatar_new (data, size, mime_type, NULL);
 604
 605         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 606 }
 607
 608 static void
 609 avatar_chooser_set_image_from_avatar (EmpathyAvatarChooser *chooser,
 610                                       EmpathyAvatar        *avatar,
 611                                       gboolean              set_locally)
 612 {
 613         GdkPixbuf *pixbuf;
 614         gchar     *mime_type = NULL;
 615
 616         g_assert (avatar != NULL);
 617
 618         pixbuf = empathy_pixbuf_from_data_and_mime (avatar->data,
 619                                                     avatar->len,
 620                                                     &mime_type);
 621         if (pixbuf == NULL) {
 622                 DEBUG ("couldn't make a pixbuf from avatar; giving up");
 623                 return;
 624         }
 625
 626         if (avatar->format == NULL) {
 627                 avatar->format = mime_type;
 628         } else {
 629                 if (strcmp (mime_type, avatar->format)) {
 630                         DEBUG ("avatar->format is %s; gdkpixbuf yields %s!",
 631                                 avatar->format, mime_type);
 632                 }
 633                 g_free (mime_type);
 634         }
 635
 636         empathy_avatar_ref (avatar);
 637
 638         avatar_chooser_set_image (chooser, avatar, pixbuf, set_locally);
 639 }
 640
 641 static void
 642 avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
 643                           EmpathyAvatar        *avatar,
 644                           GdkPixbuf            *pixbuf,
 645                           gboolean              set_locally)
 646 {
 647         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 648         GdkPixbuf                *pixbuf_view;
 649         GtkWidget                *image;
 650
 651         g_assert (avatar != NULL);
 652         g_assert (pixbuf != NULL);
 653
 654         if (set_locally) {
 655                 EmpathyAvatar *conv;
 656
 657                 conv = avatar_chooser_maybe_convert_and_scale (chooser,
 658                         pixbuf, avatar);
 659                 empathy_avatar_unref (avatar);
 660
 661                 if (conv == NULL) {
 662                         /* An error occured; don't change the avatar. */
 663                         return;
 664                 }
 665
 666                 avatar = conv;
 667         }
 668
 669         if (priv->avatar != NULL) {
 670                 empathy_avatar_unref (priv->avatar);
 671         }
 672         priv->avatar = avatar;
 673
 674         pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 675         image = gtk_image_new_from_pixbuf (pixbuf_view);
 676
 677         gtk_button_set_image (GTK_BUTTON (chooser), image);
 678         g_signal_emit (chooser, signals[CHANGED], 0);
 679
 680         g_object_unref (pixbuf_view);
 681         g_object_unref (pixbuf);
 682 }
 683
 684 static void
 685 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 686                                     const gchar          *filename)
 687 {
 688         gchar  *image_data = NULL;
 689         gsize   image_size = 0;
 690         GError *error = NULL;
 691
 692         if (!g_file_get_contents (filename, &image_data, &image_size, &error)) {
 693                 DEBUG ("Failed to load image from '%s': %s", filename,
 694                         error ? error->message : "No error given");
 695
 696                 g_clear_error (&error);
 697                 return;
 698         }
 699
 700         avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
 701 }
 702
 703 static gboolean
 704 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 705                               GdkDragContext     *context,
 706                               gint                x,
 707                               gint                y,
 708                               guint               time,
 709                               EmpathyAvatarChooser *chooser)
 710 {
 711         EmpathyAvatarChooserPriv *priv;
 712         GList                  *p;
 713
 714         priv = GET_PRIV (chooser);
 715
 716         for (p = context->targets; p != NULL; p = p->next) {
 717                 gchar *possible_type;
 718
 719                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 720
 721                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 722                         g_free (possible_type);
 723                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 724
 725                         return TRUE;
 726                 }
 727
 728                 g_free (possible_type);
 729         }
 730
 731         return FALSE;
 732 }
 733
 734 static void
 735 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 736                              GdkDragContext     *context,
 737                              guint               time,
 738                              EmpathyAvatarChooser *chooser)
 739 {
 740 }
 741
 742 static gboolean
 743 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 744                             GdkDragContext     *context,
 745                             gint                x,
 746                             gint                y,
 747                             guint               time,
 748                             EmpathyAvatarChooser *chooser)
 749 {
 750         EmpathyAvatarChooserPriv *priv;
 751         GList                  *p;
 752
 753         priv = GET_PRIV (chooser);
 754
 755         if (context->targets == NULL) {
 756                 return FALSE;
 757         }
 758
 759         for (p = context->targets; p != NULL; p = p->next) {
 760                 char *possible_type;
 761
 762                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 763                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 764                         g_free (possible_type);
 765                         gtk_drag_get_data (widget, context,
 766                                            GDK_POINTER_TO_ATOM (p->data),
 767                                            time);
 768
 769                         return TRUE;
 770                 }
 771
 772                 g_free (possible_type);
 773         }
 774
 775         return FALSE;
 776 }
 777
 778 static void
 779 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 780                                      GdkDragContext     *context,
 781                                      gint                x,
 782                                      gint                y,
 783                                      GtkSelectionData   *selection_data,
 784                                      guint               info,
 785                                      guint               time,
 786                                      EmpathyAvatarChooser *chooser)
 787 {
 788         gchar    *target_type;
 789         gboolean  handled = FALSE;
 790
 791         target_type = gdk_atom_name (selection_data->target);
 792         if (!strcmp (target_type, URI_LIST_TYPE)) {
 793                 GFile            *file;
 794                 GFileInputStream *input_stream;
 795                 gchar            *nl;
 796                 gchar            *data = NULL;
 797
 798                 nl = strstr (selection_data->data, "\r\n");
 799                 if (nl) {
 800                         gchar *uri;
 801
 802                         uri = g_strndup (selection_data->data,
 803                                          nl - (gchar*) selection_data->data);
 804
 805                         file = g_file_new_for_uri (uri);
 806                         g_free (uri);
 807                 } else {
 808                         file = g_file_new_for_uri (selection_data->data);
 809                 }
 810
 811                 input_stream = g_file_read (file, NULL, NULL);
 812
 813                 if (input_stream != NULL) {
 814                         GFileInfo *info;
 815
 816                         info = g_file_query_info (file,
 817                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 818                                                   0, NULL, NULL);
 819                         if (info != NULL) {
 820                                 goffset size;
 821                                 gssize bytes_read;
 822
 823                                 size = g_file_info_get_size (info);
 824                                 data = g_malloc (size);
 825
 826                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 827                                                                   data, size,
 828                                                                   NULL, NULL);
 829                                 if (bytes_read != -1) {
 830                                         avatar_chooser_set_image_from_data (
 831                                                 chooser, data,
 832                                                 (gsize) bytes_read,
 833                                                 TRUE);
 834                                         handled = TRUE;
 835                                 }
 836
 837                                 g_free (data);
 838                                 g_object_unref (info);
 839                         }
 840
 841                         g_object_unref (input_stream);
 842                 }
 843
 844                 g_object_unref (file);
 845         }
 846
 847         gtk_drag_finish (context, handled, FALSE, time);
 848 }
 849
 850 static void
 851 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 852                                   EmpathyAvatarChooser *chooser)
 853 {
 854         gchar *filename;
 855
 856         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 857
 858         if (filename) {
 859                 GtkWidget *image;
 860                 GdkPixbuf *pixbuf = NULL;
 861                 GdkPixbuf *scaled_pixbuf;
 862
 863                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 864
 865                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 866
 867                 if (pixbuf) {
 868                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 869                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 870                         g_object_unref (scaled_pixbuf);
 871                         g_object_unref (pixbuf);
 872                 } else {
 873                         gtk_image_set_from_stock (GTK_IMAGE (image),
 874                                                   "gtk-dialog-question",
 875                                                   GTK_ICON_SIZE_DIALOG);
 876                 }
 877         }
 878
 879         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 880 }
 881
 882 static void
 883 avatar_chooser_response_cb (GtkWidget            *widget,
 884                             gint                  response,
 885                             EmpathyAvatarChooser *chooser)
 886 {
 887         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 888
 889         if (response == GTK_RESPONSE_CANCEL) {
 890                 goto out;
 891         }
 892
 893         /* Check if we went non-ready since displaying the dialog. */
 894         if (!empathy_tp_contact_factory_is_ready (priv->tp_contact_factory)) {
 895                 DEBUG ("Can't set avatar when contact factory isn't ready.");
 896                 goto out;
 897         }
 898
 899         if (response == GTK_RESPONSE_OK) {
 900                 gchar *filename;
 901                 gchar *path;
 902
 903                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 904                 avatar_chooser_set_image_from_file (chooser, filename);
 905                 g_free (filename);
 906
 907                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 908                 if (path) {
 909                         empathy_conf_set_string (empathy_conf_get (),
 910                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 911                                                  path);
 912                         g_free (path);
 913                 }
 914         }
 915         else if (response == GTK_RESPONSE_NO) {
 916                 /* This corresponds to "No Image", not to "Cancel" */
 917                 avatar_chooser_clear_image (chooser);
 918         }
 919
 920 out:
 921         gtk_widget_destroy (widget);
 922 }
 923
 924 static void
 925 avatar_chooser_clicked_cb (GtkWidget            *button,
 926                            EmpathyAvatarChooser *chooser)
 927 {
 928         GtkFileChooser *chooser_dialog;
 929         GtkWidget      *image;
 930         gchar          *saved_dir = NULL;
 931         const gchar    *default_dir = DEFAULT_DIR;
 932         const gchar    *pics_dir;
 933         GtkFileFilter  *filter;
 934
 935         chooser_dialog = GTK_FILE_CHOOSER (
 936                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 937                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 938                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 939                                              _("No Image"),
 940                                              GTK_RESPONSE_NO,
 941                                              GTK_STOCK_CANCEL,
 942                                              GTK_RESPONSE_CANCEL,
 943                                              GTK_STOCK_OPEN,
 944                                              GTK_RESPONSE_OK,
 945                                              NULL));
 946
 947         /* Get special dirs */
 948         empathy_conf_get_string (empathy_conf_get (),
 949                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 950                                  &saved_dir);
 951         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 952                 g_free (saved_dir);
 953                 saved_dir = NULL;
 954         }
 955         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 956                 default_dir = NULL;
 957         }
 958         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 959         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 960                 pics_dir = NULL;
 961         }
 962
 963         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 964         if (saved_dir) {
 965                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 966         }
 967         else if (pics_dir) {
 968                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 969         }
 970         else if (default_dir) {
 971                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 972         } else {
 973                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 974         }
 975
 976         /* Add shortcuts to special dirs */
 977         if (saved_dir) {
 978                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 979         }
 980         else if (pics_dir) {
 981                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 982         }
 983         if (default_dir) {
 984                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 985         }
 986
 987         /* Setup preview image */
 988         image = gtk_image_new ();
 989         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 990         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 991         gtk_widget_show (image);
 992         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 993         g_signal_connect (chooser_dialog, "update-preview",
 994                           G_CALLBACK (avatar_chooser_update_preview_cb),
 995                           chooser);
 996
 997         /* Setup filers */
 998         filter = gtk_file_filter_new ();
 999         gtk_file_filter_set_name (filter, _("Images"));
1000         gtk_file_filter_add_pixbuf_formats (filter);
1001         gtk_file_chooser_add_filter (chooser_dialog, filter);
1002         filter = gtk_file_filter_new ();
1003         gtk_file_filter_set_name (filter, _("All Files"));
1004         gtk_file_filter_add_pattern(filter, "*");
1005         gtk_file_chooser_add_filter (chooser_dialog, filter);
1006
1007         /* Setup response */
1008         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
1009         g_signal_connect (chooser_dialog, "response",
1010                           G_CALLBACK (avatar_chooser_response_cb),
1011                           chooser);
1012
1013         gtk_widget_show (GTK_WIDGET (chooser_dialog));
1014         g_free (saved_dir);
1015 }
1016
1017 GtkWidget *
1018 empathy_avatar_chooser_new ()
1019 {
1020         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
1021 }
1022
1023 void
1024 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
1025                             EmpathyAvatar        *avatar)
1026 {
1027         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1028
1029         if (avatar != NULL) {
1030                 avatar_chooser_set_image_from_avatar (chooser, avatar, FALSE);
1031         } else {
1032                 avatar_chooser_clear_image (chooser);
1033         }
1034 }
1035
1036 void
1037 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
1038                                        const gchar          **data,
1039                                        gsize                 *data_size,
1040                                        const gchar          **mime_type)
1041 {
1042         EmpathyAvatarChooserPriv *priv;
1043
1044         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
1045
1046         priv = GET_PRIV (chooser);
1047
1048         if (priv->avatar != NULL) {
1049                 if (data != NULL) {
1050                         *data = priv->avatar->data;
1051                 }
1052                 if (data_size != NULL) {
1053                         *data_size = priv->avatar->len;
1054                 }
1055                 if (mime_type != NULL) {
1056                         *mime_type = priv->avatar->format;
1057                 }
1058         } else {
1059                 if (data != NULL) {
1060                         *data = NULL;
1061                 }
1062                 if (data_size != NULL) {
1063                         *data_size = 0;
1064                 }
1065                 if (mime_type != NULL) {
1066                         *mime_type = NULL;
1067                 }
1068         }
1069 }
1070