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-debug.h>
  33
  34 #include "empathy-avatar-chooser.h"
  35 #include "empathy-conf.h"
  36 #include "empathy-ui-utils.h"
  37
  38 #define DEBUG_DOMAIN "AvatarChooser"
  39
  40 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv))
  41
  42 #define AVATAR_SIZE_SAVE 96
  43 #define AVATAR_SIZE_VIEW 64
  44 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  45
  46 typedef struct {
  47         gchar *image_data;
  48         gsize  image_data_size;
  49 } EmpathyAvatarChooserPriv;
  50
  51 static void       avatar_chooser_finalize              (GObject              *object);
  52 static void       avatar_chooser_set_image_from_data   (EmpathyAvatarChooser *chooser,
  53                                                         gchar                *data,
  54                                                         gsize                 size);
  55 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  56                                                         GdkDragContext       *context,
  57                                                         gint                  x,
  58                                                         gint                  y,
  59                                                         guint                 time,
  60                                                         EmpathyAvatarChooser *chooser);
  61 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  62                                                         GdkDragContext       *context,
  63                                                         guint                 time,
  64                                                         EmpathyAvatarChooser *chooser);
  65 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  66                                                         GdkDragContext       *context,
  67                                                         gint                  x,
  68                                                         gint                  y,
  69                                                         guint                 time,
  70                                                         EmpathyAvatarChooser *chooser);
  71 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  72                                                         GdkDragContext       *context,
  73                                                         gint                  x,
  74                                                         gint                  y,
  75                                                         GtkSelectionData     *selection_data,
  76                                                         guint                 info,
  77                                                         guint                 time,
  78                                                         EmpathyAvatarChooser *chooser);
  79 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  80                                                         EmpathyAvatarChooser *chooser);
  81
  82 enum {
  83         CHANGED,
  84         LAST_SIGNAL
  85 };
  86
  87 static guint signals [LAST_SIGNAL];
  88
  89 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
  90
  91 /*
  92  * Drag and drop stuff
  93  */
  94 #define URI_LIST_TYPE "text/uri-list"
  95
  96 enum DndTargetType {
  97         DND_TARGET_TYPE_URI_LIST
  98 };
  99
 100 static const GtkTargetEntry drop_types[] = {
 101         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 102 };
 103
 104 static void
 105 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 106 {
 107         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 108
 109         object_class->finalize = avatar_chooser_finalize;
 110
 111         signals[CHANGED] =
 112                 g_signal_new ("changed",
 113                               G_TYPE_FROM_CLASS (klass),
 114                               G_SIGNAL_RUN_LAST,
 115                               0,
 116                               NULL, NULL,
 117                               g_cclosure_marshal_VOID__VOID,
 118                               G_TYPE_NONE, 0);
 119
 120         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 121 }
 122
 123 static void
 124 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 125 {
 126         EmpathyAvatarChooserPriv *priv;
 127
 128         priv = GET_PRIV (chooser);
 129
 130         gtk_drag_dest_set (GTK_WIDGET (chooser),
 131                            GTK_DEST_DEFAULT_ALL,
 132                            drop_types,
 133                            G_N_ELEMENTS (drop_types),
 134                            GDK_ACTION_COPY);
 135
 136         g_signal_connect (chooser, "drag-motion",
 137                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 138                           chooser);
 139         g_signal_connect (chooser, "drag-leave",
 140                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 141                           chooser);
 142         g_signal_connect (chooser, "drag-drop",
 143                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 144                           chooser);
 145         g_signal_connect (chooser, "drag-data-received",
 146                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 147                           chooser);
 148         g_signal_connect (chooser, "clicked",
 149                           G_CALLBACK (avatar_chooser_clicked_cb),
 150                           chooser);
 151
 152         empathy_avatar_chooser_set (chooser, NULL);
 153 }
 154
 155 static void
 156 avatar_chooser_finalize (GObject *object)
 157 {
 158         EmpathyAvatarChooserPriv *priv;
 159
 160         priv = GET_PRIV (object);
 161
 162         g_free (priv->image_data);
 163
 164         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 165 }
 166
 167 static void
 168 avatar_chooser_set_pixbuf (EmpathyAvatarChooser *chooser,
 169                            GdkPixbuf            *pixbuf)
 170 {
 171         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 172         GtkWidget                *image;
 173         GdkPixbuf                *pixbuf_view = NULL;
 174         GdkPixbuf                *pixbuf_save = NULL;
 175         GError                   *error = NULL;
 176
 177         g_free (priv->image_data);
 178         priv->image_data = NULL;
 179         priv->image_data_size = 0;
 180
 181         if (pixbuf) {
 182                 pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 183                 pixbuf_save = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 184
 185                 if (!gdk_pixbuf_save_to_buffer (pixbuf_save,
 186                                                 &priv->image_data,
 187                                                 &priv->image_data_size,
 188                                                 "png",
 189                                                 &error, NULL)) {
 190                         empathy_debug (DEBUG_DOMAIN, "Failed to save pixbuf: %s",
 191                                        error ? error->message : "No error given");
 192                         g_clear_error (&error);
 193                 }
 194                 image = gtk_image_new_from_pixbuf (pixbuf_view);
 195
 196                 g_object_unref (pixbuf_save);
 197                 g_object_unref (pixbuf_view);
 198         } else {
 199                 image = gtk_image_new_from_icon_name ("stock_person",
 200                                                       GTK_ICON_SIZE_DIALOG);
 201         }
 202
 203         gtk_button_set_image (GTK_BUTTON (chooser), image);
 204         g_signal_emit (chooser, signals[CHANGED], 0);
 205 }
 206
 207 static void
 208 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 209                                     const gchar          *filename)
 210 {
 211         GdkPixbuf *pixbuf;
 212         GError    *error = NULL;
 213
 214         if (!(pixbuf = gdk_pixbuf_new_from_file (filename, &error))) {
 215                 empathy_debug (DEBUG_DOMAIN, "Failed to load pixbuf from file: %s",
 216                                error ? error->message : "No error given");
 217                 g_clear_error (&error);
 218         }
 219
 220         avatar_chooser_set_pixbuf (chooser, pixbuf);
 221         if (pixbuf) {
 222                 g_object_unref (pixbuf);
 223         }
 224 }
 225
 226 static void
 227 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 228                                     gchar                *data,
 229                                     gsize                 size)
 230 {
 231         GdkPixbuf *pixbuf;
 232
 233         pixbuf = empathy_pixbuf_from_data (data, size);
 234         avatar_chooser_set_pixbuf (chooser, pixbuf);
 235         if (pixbuf) {
 236                 g_object_unref (pixbuf);
 237         }
 238 }
 239
 240 static gboolean
 241 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 242                               GdkDragContext     *context,
 243                               gint                x,
 244                               gint                y,
 245                               guint               time,
 246                               EmpathyAvatarChooser *chooser)
 247 {
 248         EmpathyAvatarChooserPriv *priv;
 249         GList                  *p;
 250
 251         priv = GET_PRIV (chooser);
 252
 253         for (p = context->targets; p != NULL; p = p->next) {
 254                 gchar *possible_type;
 255
 256                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 257
 258                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 259                         g_free (possible_type);
 260                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 261
 262                         return TRUE;
 263                 }
 264
 265                 g_free (possible_type);
 266         }
 267
 268         return FALSE;
 269 }
 270
 271 static void
 272 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 273                              GdkDragContext     *context,
 274                              guint               time,
 275                              EmpathyAvatarChooser *chooser)
 276 {
 277 }
 278
 279 static gboolean
 280 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 281                             GdkDragContext     *context,
 282                             gint                x,
 283                             gint                y,
 284                             guint               time,
 285                             EmpathyAvatarChooser *chooser)
 286 {
 287         EmpathyAvatarChooserPriv *priv;
 288         GList                  *p;
 289
 290         priv = GET_PRIV (chooser);
 291
 292         if (context->targets == NULL) {
 293                 return FALSE;
 294         }
 295
 296         for (p = context->targets; p != NULL; p = p->next) {
 297                 char *possible_type;
 298
 299                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 300                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 301                         g_free (possible_type);
 302                         gtk_drag_get_data (widget, context,
 303                                            GDK_POINTER_TO_ATOM (p->data),
 304                                            time);
 305
 306                         return TRUE;
 307                 }
 308
 309                 g_free (possible_type);
 310         }
 311
 312         return FALSE;
 313 }
 314
 315 static void
 316 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 317                                      GdkDragContext     *context,
 318                                      gint                x,
 319                                      gint                y,
 320                                      GtkSelectionData   *selection_data,
 321                                      guint               info,
 322                                      guint               time,
 323                                      EmpathyAvatarChooser *chooser)
 324 {
 325         gchar    *target_type;
 326         gboolean  handled = FALSE;
 327
 328         target_type = gdk_atom_name (selection_data->target);
 329         if (!strcmp (target_type, URI_LIST_TYPE)) {
 330                 GFile            *file;
 331                 GFileInputStream *input_stream;
 332                 gchar            *nl;
 333                 gchar            *data = NULL;
 334
 335                 nl = strstr (selection_data->data, "\r\n");
 336                 if (nl) {
 337                         gchar *uri;
 338
 339                         uri = g_strndup (selection_data->data,
 340                                          nl - (gchar*) selection_data->data);
 341
 342                         file = g_file_new_for_uri (uri);
 343                         g_free (uri);
 344                 } else {
 345                         file = g_file_new_for_uri (selection_data->data);
 346                 }
 347
 348                 input_stream = g_file_read (file, NULL, NULL);
 349
 350                 if (input_stream != NULL) {
 351                         GFileInfo *info;
 352
 353                         info = g_file_query_info (file,
 354                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 355                                                   0, NULL, NULL);
 356                         if (info != NULL) {
 357                                 goffset size;
 358                                 gssize bytes_read;
 359
 360                                 size = g_file_info_get_size (info);
 361                                 data = g_malloc (size);
 362
 363                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 364                                                                   data, size,
 365                                                                   NULL, NULL);
 366                                 if (bytes_read != -1) {
 367                                         avatar_chooser_set_image_from_data (chooser,
 368                                                                             data,
 369                                                                             (gsize) bytes_read);
 370                                         handled = TRUE;
 371                                 }
 372
 373                                 g_free (data);
 374                                 g_object_unref (info);
 375                         }
 376
 377                         g_object_unref (input_stream);
 378                 }
 379
 380                 g_object_unref (file);
 381         }
 382
 383         gtk_drag_finish (context, handled, FALSE, time);
 384 }
 385
 386 static void
 387 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 388                                   EmpathyAvatarChooser *chooser)
 389 {
 390         gchar *filename;
 391
 392         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 393
 394         if (filename) {
 395                 GtkWidget *image;
 396                 GdkPixbuf *pixbuf = NULL;
 397                 GdkPixbuf *scaled_pixbuf;
 398
 399                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 400
 401                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 402
 403                 if (pixbuf) {
 404                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 405                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 406                         g_object_unref (scaled_pixbuf);
 407                         g_object_unref (pixbuf);
 408                 } else {
 409                         gtk_image_set_from_stock (GTK_IMAGE (image),
 410                                                   "gtk-dialog-question",
 411                                                   GTK_ICON_SIZE_DIALOG);
 412                 }
 413         }
 414
 415         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 416 }
 417
 418 static void
 419 avatar_chooser_response_cb (GtkWidget            *widget,
 420                             gint                  response,
 421                             EmpathyAvatarChooser *chooser)
 422 {
 423         if (response == GTK_RESPONSE_OK) {
 424                 gchar *filename;
 425                 gchar *path;
 426
 427                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 428                 avatar_chooser_set_image_from_file (chooser, filename);
 429                 g_free (filename);
 430
 431                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 432                 if (path) {
 433                         empathy_conf_set_string (empathy_conf_get (),
 434                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 435                                                  path);
 436                         g_free (path);
 437                 }
 438         }
 439         else if (response == GTK_RESPONSE_NO) {
 440                 avatar_chooser_set_image_from_data (chooser, NULL, 0);
 441         }
 442
 443         gtk_widget_destroy (widget);
 444 }
 445
 446 static void
 447 avatar_chooser_clicked_cb (GtkWidget            *button,
 448                            EmpathyAvatarChooser *chooser)
 449 {
 450         GtkFileChooser *chooser_dialog;
 451         GtkWidget      *image;
 452         gchar          *saved_dir = NULL;
 453         const gchar    *default_dir = DEFAULT_DIR;
 454         const gchar    *pics_dir;
 455         GtkFileFilter  *filter;
 456
 457         chooser_dialog = GTK_FILE_CHOOSER (
 458                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 459                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 460                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 461                                              _("No Image"),
 462                                              GTK_RESPONSE_NO,
 463                                              GTK_STOCK_CANCEL,
 464                                              GTK_RESPONSE_CANCEL,
 465                                              GTK_STOCK_OPEN,
 466                                              GTK_RESPONSE_OK,
 467                                              NULL));
 468
 469         /* Get special dirs */
 470         empathy_conf_get_string (empathy_conf_get (),
 471                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 472                                  &saved_dir);
 473         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 474                 g_free (saved_dir);
 475                 saved_dir = NULL;
 476         }
 477         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 478                 default_dir = NULL;
 479         }
 480         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 481         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 482                 pics_dir = NULL;
 483         }
 484
 485         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 486         if (saved_dir) {
 487                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 488         }
 489         else if (pics_dir) {
 490                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 491         }
 492         else if (default_dir) {
 493                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 494         } else {
 495                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 496         }
 497
 498         /* Add shortcuts to special dirs */
 499         if (saved_dir) {
 500                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 501         }
 502         else if (pics_dir) {
 503                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 504         }
 505         if (default_dir) {
 506                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 507         }
 508
 509         /* Setup preview image */
 510         image = gtk_image_new ();
 511         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 512         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 513         gtk_widget_show (image);
 514         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 515         g_signal_connect (chooser_dialog, "update-preview",
 516                           G_CALLBACK (avatar_chooser_update_preview_cb),
 517                           chooser);
 518
 519         /* Setup filers */
 520         filter = gtk_file_filter_new ();
 521         gtk_file_filter_set_name (filter, _("Images"));
 522         gtk_file_filter_add_pixbuf_formats (filter);
 523         gtk_file_chooser_add_filter (chooser_dialog, filter);
 524         filter = gtk_file_filter_new ();
 525         gtk_file_filter_set_name (filter, _("All Files"));
 526         gtk_file_filter_add_pattern(filter, "*");
 527         gtk_file_chooser_add_filter (chooser_dialog, filter);
 528
 529         /* Setup response */
 530         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 531         g_signal_connect (chooser_dialog, "response",
 532                           G_CALLBACK (avatar_chooser_response_cb),
 533                           chooser);
 534
 535         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 536         g_free (saved_dir);
 537 }
 538
 539 GtkWidget *
 540 empathy_avatar_chooser_new (void)
 541 {
 542         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 543 }
 544
 545 void
 546 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 547                             EmpathyAvatar        *avatar)
 548 {
 549         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 550
 551         avatar_chooser_set_image_from_data (chooser,
 552                                             avatar ? avatar->data : NULL,
 553                                             avatar ? avatar->len : 0);
 554 }
 555
 556 void
 557 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 558                                        const gchar          **data,
 559                                        gsize                 *data_size,
 560                                        const gchar          **mime_type)
 561 {
 562         EmpathyAvatarChooserPriv *priv;
 563
 564         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 565
 566         priv = GET_PRIV (chooser);
 567
 568         if (data) {
 569                 *data = priv->image_data;
 570         }
 571         if (data_size) {
 572                 *data_size = priv->image_data_size;
 573         }
 574         if (mime_type) {
 575                 *mime_type = "png";
 576         }
 577 }
 578