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 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 <libgnomevfs/gnome-vfs-ops.h>
  31
  32 #include <libempathy/empathy-debug.h>
  33 #include <libempathy/empathy-conf.h>
  34
  35 #include "empathy-avatar-chooser.h"
  36 #include "empathy-preferences.h"
  37 #include "empathy-ui-utils.h"
  38
  39 #define DEBUG_DOMAIN "AvatarChooser"
  40
  41 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_AVATAR_CHOOSER_TYPE, EmpathyAvatarChooserPriv))
  42
  43 #define AVATAR_MAX 96
  44 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  45
  46 typedef struct {
  47         GdkPixbuf *pixbuf;
  48         gchar     *image_data;
  49         gsize      image_data_size;
  50 } EmpathyAvatarChooserPriv;
  51
  52 static void       avatar_chooser_finalize              (GObject              *object);
  53 static void       avatar_chooser_set_image_from_data   (EmpathyAvatarChooser *chooser,
  54                                                         gchar                *data,
  55                                                         gsize                 size);
  56 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  57                                                         GdkDragContext       *context,
  58                                                         gint                  x,
  59                                                         gint                  y,
  60                                                         guint                 time,
  61                                                         EmpathyAvatarChooser *chooser);
  62 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  63                                                         GdkDragContext       *context,
  64                                                         guint                 time,
  65                                                         EmpathyAvatarChooser *chooser);
  66 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  67                                                         GdkDragContext       *context,
  68                                                         gint                  x,
  69                                                         gint                  y,
  70                                                         guint                 time,
  71                                                         EmpathyAvatarChooser *chooser);
  72 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  73                                                         GdkDragContext       *context,
  74                                                         gint                  x,
  75                                                         gint                  y,
  76                                                         GtkSelectionData     *selection_data,
  77                                                         guint                 info,
  78                                                         guint                 time,
  79                                                         EmpathyAvatarChooser *chooser);
  80 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  81                                                         EmpathyAvatarChooser *chooser);
  82
  83 enum {
  84         CHANGED,
  85         LAST_SIGNAL
  86 };
  87
  88 static guint signals [LAST_SIGNAL];
  89
  90 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
  91
  92 /*
  93  * Drag and drop stuff
  94  */
  95 #define URI_LIST_TYPE "text/uri-list"
  96
  97 enum DndTargetType {
  98         DND_TARGET_TYPE_URI_LIST
  99 };
 100
 101 static const GtkTargetEntry drop_types[] = {
 102         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 103 };
 104
 105 static void
 106 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 107 {
 108         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 109
 110         object_class->finalize = avatar_chooser_finalize;
 111
 112         signals[CHANGED] =
 113                 g_signal_new ("changed",
 114                               G_TYPE_FROM_CLASS (klass),
 115                               G_SIGNAL_RUN_LAST,
 116                               0,
 117                               NULL, NULL,
 118                               g_cclosure_marshal_VOID__VOID,
 119                               G_TYPE_NONE, 0);
 120
 121         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 122 }
 123
 124 static void
 125 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 126 {
 127         EmpathyAvatarChooserPriv *priv;
 128
 129         priv = GET_PRIV (chooser);
 130
 131         gtk_drag_dest_set (GTK_WIDGET (chooser),
 132                            GTK_DEST_DEFAULT_ALL,
 133                            drop_types,
 134                            G_N_ELEMENTS (drop_types),
 135                            GDK_ACTION_COPY);
 136
 137         g_signal_connect (chooser, "drag-motion",
 138                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 139                           chooser);
 140         g_signal_connect (chooser, "drag-leave",
 141                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 142                           chooser);
 143         g_signal_connect (chooser, "drag-drop",
 144                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 145                           chooser);
 146         g_signal_connect (chooser, "drag-data-received",
 147                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 148                           chooser);
 149         g_signal_connect (chooser, "clicked",
 150                           G_CALLBACK (avatar_chooser_clicked_cb),
 151                           chooser);
 152
 153         empathy_avatar_chooser_set (chooser, NULL);
 154 }
 155
 156 static void
 157 avatar_chooser_finalize (GObject *object)
 158 {
 159         EmpathyAvatarChooserPriv *priv;
 160
 161         priv = GET_PRIV (object);
 162
 163         if (priv->pixbuf) {
 164                 g_object_unref (priv->pixbuf);
 165         }
 166         g_free (priv->image_data);
 167
 168         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 169 }
 170
 171 static void
 172 avatar_chooser_set_pixbuf (EmpathyAvatarChooser *chooser,
 173                            GdkPixbuf            *pixbuf)
 174 {
 175         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 176         GtkWidget                *image;
 177         GError                   *error = NULL;
 178
 179         if (priv->pixbuf) {
 180                 g_object_unref (priv->pixbuf);
 181                 priv->pixbuf = NULL;
 182         }
 183         g_free (priv->image_data);
 184         priv->image_data = NULL;
 185         priv->image_data_size = 0;
 186
 187         if (pixbuf) {
 188                 priv->pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_MAX);
 189         }
 190
 191         if (priv->pixbuf) {
 192                 if (!gdk_pixbuf_save_to_buffer (priv->pixbuf,
 193                                                 &priv->image_data,
 194                                                 &priv->image_data_size,
 195                                                 "png",
 196                                                 &error, NULL)) {
 197                         empathy_debug (DEBUG_DOMAIN, "Failed to save pixbuf: %s",
 198                                        error ? error->message : "No error given");
 199                         g_clear_error (&error);
 200                         g_object_unref (priv->pixbuf);
 201                         priv->pixbuf = NULL;
 202                 }
 203         }
 204
 205         if (!priv->pixbuf) {
 206                 image = gtk_image_new_from_icon_name ("stock_person",
 207                                                       GTK_ICON_SIZE_DIALOG);
 208         } else {
 209                 image = gtk_image_new_from_pixbuf (priv->pixbuf);
 210         }
 211
 212         gtk_button_set_image (GTK_BUTTON (chooser), image);
 213         g_signal_emit (chooser, signals[CHANGED], 0);
 214 }
 215
 216 static void
 217 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 218                                     const gchar          *filename)
 219 {
 220         GdkPixbuf *pixbuf;
 221         GError    *error = NULL;
 222
 223         if (!(pixbuf = gdk_pixbuf_new_from_file (filename, &error))) {
 224                 empathy_debug (DEBUG_DOMAIN, "Failed to load pixbuf from file: %s",
 225                                error ? error->message : "No error given");
 226                 g_clear_error (&error);
 227         }
 228
 229         avatar_chooser_set_pixbuf (chooser, pixbuf);
 230         if (pixbuf) {
 231                 g_object_unref (pixbuf);
 232         }
 233 }
 234
 235 static void
 236 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 237                                     gchar                *data,
 238                                     gsize                 size)
 239 {
 240         GdkPixbuf *pixbuf;
 241
 242         pixbuf = empathy_pixbuf_from_data (data, size);
 243         avatar_chooser_set_pixbuf (chooser, pixbuf);
 244         if (pixbuf) {
 245                 g_object_unref (pixbuf);
 246         }
 247 }
 248
 249 static gboolean
 250 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 251                               GdkDragContext     *context,
 252                               gint                x,
 253                               gint                y,
 254                               guint               time,
 255                               EmpathyAvatarChooser *chooser)
 256 {
 257         EmpathyAvatarChooserPriv *priv;
 258         GList                  *p;
 259
 260         priv = GET_PRIV (chooser);
 261
 262         for (p = context->targets; p != NULL; p = p->next) {
 263                 gchar *possible_type;
 264
 265                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 266
 267                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 268                         g_free (possible_type);
 269                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 270
 271                         return TRUE;
 272                 }
 273
 274                 g_free (possible_type);
 275         }
 276
 277         return FALSE;
 278 }
 279
 280 static void
 281 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 282                              GdkDragContext     *context,
 283                              guint               time,
 284                              EmpathyAvatarChooser *chooser)
 285 {
 286 }
 287
 288 static gboolean
 289 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 290                             GdkDragContext     *context,
 291                             gint                x,
 292                             gint                y,
 293                             guint               time,
 294                             EmpathyAvatarChooser *chooser)
 295 {
 296         EmpathyAvatarChooserPriv *priv;
 297         GList                  *p;
 298
 299         priv = GET_PRIV (chooser);
 300
 301         if (context->targets == NULL) {
 302                 return FALSE;
 303         }
 304
 305         for (p = context->targets; p != NULL; p = p->next) {
 306                 char *possible_type;
 307
 308                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 309                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 310                         g_free (possible_type);
 311                         gtk_drag_get_data (widget, context,
 312                                            GDK_POINTER_TO_ATOM (p->data),
 313                                            time);
 314
 315                         return TRUE;
 316                 }
 317
 318                 g_free (possible_type);
 319         }
 320
 321         return FALSE;
 322 }
 323
 324 static void
 325 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 326                                      GdkDragContext     *context,
 327                                      gint                x,
 328                                      gint                y,
 329                                      GtkSelectionData   *selection_data,
 330                                      guint               info,
 331                                      guint               time,
 332                                      EmpathyAvatarChooser *chooser)
 333 {
 334         gchar    *target_type;
 335         gboolean  handled = FALSE;
 336
 337         target_type = gdk_atom_name (selection_data->target);
 338         if (!strcmp (target_type, URI_LIST_TYPE)) {
 339                 GnomeVFSHandle   *handle = NULL;
 340                 GnomeVFSResult    result;
 341                 GnomeVFSFileInfo  info;
 342                 gchar            *uri;
 343                 gchar            *nl;
 344                 gchar            *data = NULL;
 345
 346                 nl = strstr (selection_data->data, "\r\n");
 347                 if (nl) {
 348                         uri = g_strndup (selection_data->data,
 349                                          nl - (gchar*) selection_data->data);
 350                 } else {
 351                         uri = g_strdup (selection_data->data);
 352                 }
 353
 354                 result = gnome_vfs_open (&handle, uri, GNOME_VFS_OPEN_READ);
 355                 if (result == GNOME_VFS_OK) {
 356                         result = gnome_vfs_get_file_info_from_handle (handle,
 357                                                                       &info,
 358                                                                       GNOME_VFS_FILE_INFO_DEFAULT);
 359                         if (result == GNOME_VFS_OK) {
 360                                 GnomeVFSFileSize data_size;
 361
 362                                 data = g_malloc (info.size);
 363
 364                                 result = gnome_vfs_read (handle, data, info.size, &data_size);
 365                                 if (result == GNOME_VFS_OK) {
 366                                         avatar_chooser_set_image_from_data (chooser,
 367                                                                             data,
 368                                                                             data_size);
 369                                         handled = TRUE;
 370                                 } else {
 371                                         g_free (data);
 372                                 }
 373                         }
 374
 375                         gnome_vfs_close (handle);
 376                 }
 377
 378                 g_free (uri);
 379         }
 380
 381         gtk_drag_finish (context, handled, FALSE, time);
 382 }
 383
 384 static void
 385 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 386                                   EmpathyAvatarChooser *chooser)
 387 {
 388         gchar *filename;
 389
 390         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 391
 392         if (filename) {
 393                 GtkWidget *image;
 394                 GdkPixbuf *pixbuf = NULL;
 395                 GdkPixbuf *scaled_pixbuf;
 396
 397                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 398
 399                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 400
 401                 if (pixbuf) {
 402                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_MAX);
 403                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 404                         g_object_unref (scaled_pixbuf);
 405                         g_object_unref (pixbuf);
 406                 } else {
 407                         gtk_image_set_from_stock (GTK_IMAGE (image),
 408                                                   "gtk-dialog-question",
 409                                                   GTK_ICON_SIZE_DIALOG);
 410                 }
 411         }
 412
 413         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 414 }
 415
 416 static void
 417 avatar_chooser_response_cb (GtkWidget            *widget,
 418                             gint                  response,
 419                             EmpathyAvatarChooser *chooser)
 420 {
 421         if (response == GTK_RESPONSE_OK) {
 422                 gchar *filename;
 423                 gchar *path;
 424
 425                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 426                 avatar_chooser_set_image_from_file (chooser, filename);
 427                 g_free (filename);
 428
 429                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 430                 if (path) {
 431                         empathy_conf_set_string (empathy_conf_get (),
 432                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 433                                                  path);
 434                         g_free (path);
 435                 }
 436         }
 437         else if (response == GTK_RESPONSE_NO) {
 438                 avatar_chooser_set_image_from_data (chooser, NULL, 0);
 439         }
 440
 441         gtk_widget_destroy (widget);
 442 }
 443
 444 static void
 445 avatar_chooser_clicked_cb (GtkWidget            *button,
 446                            EmpathyAvatarChooser *chooser)
 447 {
 448         GtkFileChooser *chooser_dialog;
 449         GtkWidget      *image;
 450         gchar          *saved_dir = NULL;
 451         const gchar    *default_dir = DEFAULT_DIR;
 452         const gchar    *pics_dir;
 453         GtkFileFilter  *filter;
 454
 455         chooser_dialog = GTK_FILE_CHOOSER (
 456                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 457                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 458                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 459                                              _("No Image"),
 460                                              GTK_RESPONSE_NO,
 461                                              GTK_STOCK_CANCEL,
 462                                              GTK_RESPONSE_CANCEL,
 463                                              GTK_STOCK_OPEN,
 464                                              GTK_RESPONSE_OK,
 465                                              NULL));
 466
 467         /* Get special dirs */
 468         empathy_conf_get_string (empathy_conf_get (),
 469                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 470                                  &saved_dir);
 471         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 472                 g_free (saved_dir);
 473                 saved_dir = NULL;
 474         }
 475         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 476                 default_dir = NULL;
 477         }
 478         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 479         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 480                 pics_dir = NULL;
 481         }
 482
 483         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 484         if (saved_dir) {
 485                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 486         }
 487         else if (pics_dir) {
 488                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 489         }
 490         else if (default_dir) {
 491                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 492         } else {
 493                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 494         }
 495
 496         /* Add shortcuts to special dirs */
 497         if (saved_dir) {
 498                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 499         }
 500         else if (pics_dir) {
 501                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 502         }
 503         if (default_dir) {
 504                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 505         }
 506
 507         /* Setup preview image */
 508         image = gtk_image_new ();
 509         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 510         gtk_widget_set_size_request (image, AVATAR_MAX, AVATAR_MAX);
 511         gtk_widget_show (image);
 512         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 513         g_signal_connect (chooser_dialog, "update-preview",
 514                           G_CALLBACK (avatar_chooser_update_preview_cb),
 515                           chooser);
 516
 517         /* Setup filers */
 518         filter = gtk_file_filter_new ();
 519         gtk_file_filter_set_name (filter, _("Images"));
 520         gtk_file_filter_add_pixbuf_formats (filter);
 521         gtk_file_chooser_add_filter (chooser_dialog, filter);
 522         filter = gtk_file_filter_new ();
 523         gtk_file_filter_set_name (filter, _("All Files"));
 524         gtk_file_filter_add_pattern(filter, "*");
 525         gtk_file_chooser_add_filter (chooser_dialog, filter);
 526
 527         /* Setup response */
 528         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 529         g_signal_connect (chooser_dialog, "response",
 530                           G_CALLBACK (avatar_chooser_response_cb),
 531                           chooser);
 532
 533         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 534         g_free (saved_dir);
 535 }
 536
 537 GtkWidget *
 538 empathy_avatar_chooser_new (void)
 539 {
 540         return g_object_new (EMPATHY_AVATAR_CHOOSER_TYPE, NULL);
 541 }
 542
 543 void
 544 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 545                             EmpathyAvatar        *avatar)
 546 {
 547         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 548
 549         avatar_chooser_set_image_from_data (chooser,
 550                                             avatar ? avatar->data : NULL,
 551                                             avatar ? avatar->len : 0);
 552 }
 553
 554 void
 555 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 556                                        gchar                **data,
 557                                        gsize                 *data_size)
 558 {
 559         EmpathyAvatarChooserPriv *priv;
 560
 561         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 562
 563         priv = GET_PRIV (chooser);
 564
 565         if (data) {
 566                 *data = priv->image_data;
 567         }
 568         if (*data_size) {
 569                 *data_size = priv->image_data_size;
 570         }
 571 }
 572