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