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_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv))
  42
  43 #define AVATAR_SIZE_SAVE 96
  44 #define AVATAR_SIZE_VIEW 64
  45 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  46
  47 typedef struct {
  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         g_free (priv->image_data);
 164
 165         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 166 }
 167
 168 static void
 169 avatar_chooser_set_pixbuf (EmpathyAvatarChooser *chooser,
 170                            GdkPixbuf            *pixbuf)
 171 {
 172         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 173         GtkWidget                *image;
 174         GdkPixbuf                *pixbuf_view = NULL;
 175         GdkPixbuf                *pixbuf_save = NULL;
 176         GError                   *error = NULL;
 177
 178         g_free (priv->image_data);
 179         priv->image_data = NULL;
 180         priv->image_data_size = 0;
 181
 182         if (pixbuf) {
 183                 pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 184                 pixbuf_save = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 185
 186                 if (!gdk_pixbuf_save_to_buffer (pixbuf_save,
 187                                                 &priv->image_data,
 188                                                 &priv->image_data_size,
 189                                                 "png",
 190                                                 &error, NULL)) {
 191                         empathy_debug (DEBUG_DOMAIN, "Failed to save pixbuf: %s",
 192                                        error ? error->message : "No error given");
 193                         g_clear_error (&error);
 194                 }
 195                 image = gtk_image_new_from_pixbuf (pixbuf_view);
 196
 197                 g_object_unref (pixbuf_save);
 198                 g_object_unref (pixbuf_view);
 199         } else {
 200                 image = gtk_image_new_from_icon_name ("stock_person",
 201                                                       GTK_ICON_SIZE_DIALOG);
 202         }
 203
 204         gtk_button_set_image (GTK_BUTTON (chooser), image);
 205         g_signal_emit (chooser, signals[CHANGED], 0);
 206 }
 207
 208 static void
 209 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 210                                     const gchar          *filename)
 211 {
 212         GdkPixbuf *pixbuf;
 213         GError    *error = NULL;
 214
 215         if (!(pixbuf = gdk_pixbuf_new_from_file (filename, &error))) {
 216                 empathy_debug (DEBUG_DOMAIN, "Failed to load pixbuf from file: %s",
 217                                error ? error->message : "No error given");
 218                 g_clear_error (&error);
 219         }
 220
 221         avatar_chooser_set_pixbuf (chooser, pixbuf);
 222         if (pixbuf) {
 223                 g_object_unref (pixbuf);
 224         }
 225 }
 226
 227 static void
 228 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 229                                     gchar                *data,
 230                                     gsize                 size)
 231 {
 232         GdkPixbuf *pixbuf;
 233
 234         pixbuf = empathy_pixbuf_from_data (data, size);
 235         avatar_chooser_set_pixbuf (chooser, pixbuf);
 236         if (pixbuf) {
 237                 g_object_unref (pixbuf);
 238         }
 239 }
 240
 241 static gboolean
 242 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 243                               GdkDragContext     *context,
 244                               gint                x,
 245                               gint                y,
 246                               guint               time,
 247                               EmpathyAvatarChooser *chooser)
 248 {
 249         EmpathyAvatarChooserPriv *priv;
 250         GList                  *p;
 251
 252         priv = GET_PRIV (chooser);
 253
 254         for (p = context->targets; p != NULL; p = p->next) {
 255                 gchar *possible_type;
 256
 257                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 258
 259                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 260                         g_free (possible_type);
 261                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 262
 263                         return TRUE;
 264                 }
 265
 266                 g_free (possible_type);
 267         }
 268
 269         return FALSE;
 270 }
 271
 272 static void
 273 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 274                              GdkDragContext     *context,
 275                              guint               time,
 276                              EmpathyAvatarChooser *chooser)
 277 {
 278 }
 279
 280 static gboolean
 281 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 282                             GdkDragContext     *context,
 283                             gint                x,
 284                             gint                y,
 285                             guint               time,
 286                             EmpathyAvatarChooser *chooser)
 287 {
 288         EmpathyAvatarChooserPriv *priv;
 289         GList                  *p;
 290
 291         priv = GET_PRIV (chooser);
 292
 293         if (context->targets == NULL) {
 294                 return FALSE;
 295         }
 296
 297         for (p = context->targets; p != NULL; p = p->next) {
 298                 char *possible_type;
 299
 300                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 301                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 302                         g_free (possible_type);
 303                         gtk_drag_get_data (widget, context,
 304                                            GDK_POINTER_TO_ATOM (p->data),
 305                                            time);
 306
 307                         return TRUE;
 308                 }
 309
 310                 g_free (possible_type);
 311         }
 312
 313         return FALSE;
 314 }
 315
 316 static void
 317 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 318                                      GdkDragContext     *context,
 319                                      gint                x,
 320                                      gint                y,
 321                                      GtkSelectionData   *selection_data,
 322                                      guint               info,
 323                                      guint               time,
 324                                      EmpathyAvatarChooser *chooser)
 325 {
 326         gchar    *target_type;
 327         gboolean  handled = FALSE;
 328
 329         target_type = gdk_atom_name (selection_data->target);
 330         if (!strcmp (target_type, URI_LIST_TYPE)) {
 331                 GnomeVFSHandle   *handle = NULL;
 332                 GnomeVFSResult    result;
 333                 GnomeVFSFileInfo  info;
 334                 gchar            *uri;
 335                 gchar            *nl;
 336                 gchar            *data = NULL;
 337
 338                 nl = strstr (selection_data->data, "\r\n");
 339                 if (nl) {
 340                         uri = g_strndup (selection_data->data,
 341                                          nl - (gchar*) selection_data->data);
 342                 } else {
 343                         uri = g_strdup (selection_data->data);
 344                 }
 345
 346                 result = gnome_vfs_open (&handle, uri, GNOME_VFS_OPEN_READ);
 347                 if (result == GNOME_VFS_OK) {
 348                         result = gnome_vfs_get_file_info_from_handle (handle,
 349                                                                       &info,
 350                                                                       GNOME_VFS_FILE_INFO_DEFAULT);
 351                         if (result == GNOME_VFS_OK) {
 352                                 GnomeVFSFileSize data_size;
 353
 354                                 data = g_malloc (info.size);
 355
 356                                 result = gnome_vfs_read (handle, data, info.size, &data_size);
 357                                 if (result == GNOME_VFS_OK) {
 358                                         avatar_chooser_set_image_from_data (chooser,
 359                                                                             data,
 360                                                                             data_size);
 361                                         handled = TRUE;
 362                                 } else {
 363                                         g_free (data);
 364                                 }
 365                         }
 366
 367                         gnome_vfs_close (handle);
 368                 }
 369
 370                 g_free (uri);
 371         }
 372
 373         gtk_drag_finish (context, handled, FALSE, time);
 374 }
 375
 376 static void
 377 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 378                                   EmpathyAvatarChooser *chooser)
 379 {
 380         gchar *filename;
 381
 382         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 383
 384         if (filename) {
 385                 GtkWidget *image;
 386                 GdkPixbuf *pixbuf = NULL;
 387                 GdkPixbuf *scaled_pixbuf;
 388
 389                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 390
 391                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 392
 393                 if (pixbuf) {
 394                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 395                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 396                         g_object_unref (scaled_pixbuf);
 397                         g_object_unref (pixbuf);
 398                 } else {
 399                         gtk_image_set_from_stock (GTK_IMAGE (image),
 400                                                   "gtk-dialog-question",
 401                                                   GTK_ICON_SIZE_DIALOG);
 402                 }
 403         }
 404
 405         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 406 }
 407
 408 static void
 409 avatar_chooser_response_cb (GtkWidget            *widget,
 410                             gint                  response,
 411                             EmpathyAvatarChooser *chooser)
 412 {
 413         if (response == GTK_RESPONSE_OK) {
 414                 gchar *filename;
 415                 gchar *path;
 416
 417                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 418                 avatar_chooser_set_image_from_file (chooser, filename);
 419                 g_free (filename);
 420
 421                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 422                 if (path) {
 423                         empathy_conf_set_string (empathy_conf_get (),
 424                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 425                                                  path);
 426                         g_free (path);
 427                 }
 428         }
 429         else if (response == GTK_RESPONSE_NO) {
 430                 avatar_chooser_set_image_from_data (chooser, NULL, 0);
 431         }
 432
 433         gtk_widget_destroy (widget);
 434 }
 435
 436 static void
 437 avatar_chooser_clicked_cb (GtkWidget            *button,
 438                            EmpathyAvatarChooser *chooser)
 439 {
 440         GtkFileChooser *chooser_dialog;
 441         GtkWidget      *image;
 442         gchar          *saved_dir = NULL;
 443         const gchar    *default_dir = DEFAULT_DIR;
 444         const gchar    *pics_dir;
 445         GtkFileFilter  *filter;
 446
 447         chooser_dialog = GTK_FILE_CHOOSER (
 448                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 449                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 450                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 451                                              _("No Image"),
 452                                              GTK_RESPONSE_NO,
 453                                              GTK_STOCK_CANCEL,
 454                                              GTK_RESPONSE_CANCEL,
 455                                              GTK_STOCK_OPEN,
 456                                              GTK_RESPONSE_OK,
 457                                              NULL));
 458
 459         /* Get special dirs */
 460         empathy_conf_get_string (empathy_conf_get (),
 461                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 462                                  &saved_dir);
 463         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 464                 g_free (saved_dir);
 465                 saved_dir = NULL;
 466         }
 467         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 468                 default_dir = NULL;
 469         }
 470         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 471         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 472                 pics_dir = NULL;
 473         }
 474
 475         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 476         if (saved_dir) {
 477                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 478         }
 479         else if (pics_dir) {
 480                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 481         }
 482         else if (default_dir) {
 483                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 484         } else {
 485                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 486         }
 487
 488         /* Add shortcuts to special dirs */
 489         if (saved_dir) {
 490                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 491         }
 492         else if (pics_dir) {
 493                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 494         }
 495         if (default_dir) {
 496                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 497         }
 498
 499         /* Setup preview image */
 500         image = gtk_image_new ();
 501         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 502         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 503         gtk_widget_show (image);
 504         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 505         g_signal_connect (chooser_dialog, "update-preview",
 506                           G_CALLBACK (avatar_chooser_update_preview_cb),
 507                           chooser);
 508
 509         /* Setup filers */
 510         filter = gtk_file_filter_new ();
 511         gtk_file_filter_set_name (filter, _("Images"));
 512         gtk_file_filter_add_pixbuf_formats (filter);
 513         gtk_file_chooser_add_filter (chooser_dialog, filter);
 514         filter = gtk_file_filter_new ();
 515         gtk_file_filter_set_name (filter, _("All Files"));
 516         gtk_file_filter_add_pattern(filter, "*");
 517         gtk_file_chooser_add_filter (chooser_dialog, filter);
 518
 519         /* Setup response */
 520         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 521         g_signal_connect (chooser_dialog, "response",
 522                           G_CALLBACK (avatar_chooser_response_cb),
 523                           chooser);
 524
 525         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 526         g_free (saved_dir);
 527 }
 528
 529 GtkWidget *
 530 empathy_avatar_chooser_new (void)
 531 {
 532         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 533 }
 534
 535 void
 536 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 537                             EmpathyAvatar        *avatar)
 538 {
 539         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 540
 541         avatar_chooser_set_image_from_data (chooser,
 542                                             avatar ? avatar->data : NULL,
 543                                             avatar ? avatar->len : 0);
 544 }
 545
 546 void
 547 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 548                                        const gchar          **data,
 549                                        gsize                 *data_size,
 550                                        const gchar          **mime_type)
 551 {
 552         EmpathyAvatarChooserPriv *priv;
 553
 554         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 555
 556         priv = GET_PRIV (chooser);
 557
 558         if (data) {
 559                 *data = priv->image_data;
 560         }
 561         if (data_size) {
 562                 *data_size = priv->image_data_size;
 563         }
 564         if (mime_type) {
 565                 *mime_type = "png";
 566         }
 567 }
 568