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-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                 GFile            *file;
 332                 GFileInputStream *input_stream;
 333                 gchar            *nl;
 334                 gchar            *data = NULL;
 335
 336                 nl = strstr (selection_data->data, "\r\n");
 337                 if (nl) {
 338                         gchar *uri;
 339
 340                         uri = g_strndup (selection_data->data,
 341                                          nl - (gchar*) selection_data->data);
 342
 343                         file = g_file_new_for_uri (uri);
 344                         g_free (uri);
 345                 } else {
 346                         file = g_file_new_for_uri (selection_data->data);
 347                 }
 348
 349                 input_stream = g_file_read (file, NULL, NULL);
 350
 351                 if (input_stream != NULL) {
 352                         GFileInfo *info;
 353
 354                         info = g_file_query_info (file,
 355                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 356                                                   0, NULL, NULL);
 357                         if (info != NULL) {
 358                                 goffset size;
 359                                 gssize bytes_read;
 360
 361                                 size = g_file_info_get_size (info);
 362                                 data = g_malloc (size);
 363
 364                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 365                                                                   data, size,
 366                                                                   NULL, NULL);
 367                                 if (bytes_read != -1) {
 368                                         avatar_chooser_set_image_from_data (chooser,
 369                                                                             data,
 370                                                                             (gsize) bytes_read);
 371                                         handled = TRUE;
 372                                 }
 373
 374                                 g_free (data);
 375                                 g_object_unref (info);
 376                         }
 377
 378                         g_object_unref (input_stream);
 379                 }
 380
 381                 g_object_unref (file);
 382         }
 383
 384         gtk_drag_finish (context, handled, FALSE, time);
 385 }
 386
 387 static void
 388 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 389                                   EmpathyAvatarChooser *chooser)
 390 {
 391         gchar *filename;
 392
 393         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 394
 395         if (filename) {
 396                 GtkWidget *image;
 397                 GdkPixbuf *pixbuf = NULL;
 398                 GdkPixbuf *scaled_pixbuf;
 399
 400                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 401
 402                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 403
 404                 if (pixbuf) {
 405                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 406                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 407                         g_object_unref (scaled_pixbuf);
 408                         g_object_unref (pixbuf);
 409                 } else {
 410                         gtk_image_set_from_stock (GTK_IMAGE (image),
 411                                                   "gtk-dialog-question",
 412                                                   GTK_ICON_SIZE_DIALOG);
 413                 }
 414         }
 415
 416         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 417 }
 418
 419 static void
 420 avatar_chooser_response_cb (GtkWidget            *widget,
 421                             gint                  response,
 422                             EmpathyAvatarChooser *chooser)
 423 {
 424         if (response == GTK_RESPONSE_OK) {
 425                 gchar *filename;
 426                 gchar *path;
 427
 428                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 429                 avatar_chooser_set_image_from_file (chooser, filename);
 430                 g_free (filename);
 431
 432                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 433                 if (path) {
 434                         empathy_conf_set_string (empathy_conf_get (),
 435                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 436                                                  path);
 437                         g_free (path);
 438                 }
 439         }
 440         else if (response == GTK_RESPONSE_NO) {
 441                 avatar_chooser_set_image_from_data (chooser, NULL, 0);
 442         }
 443
 444         gtk_widget_destroy (widget);
 445 }
 446
 447 static void
 448 avatar_chooser_clicked_cb (GtkWidget            *button,
 449                            EmpathyAvatarChooser *chooser)
 450 {
 451         GtkFileChooser *chooser_dialog;
 452         GtkWidget      *image;
 453         gchar          *saved_dir = NULL;
 454         const gchar    *default_dir = DEFAULT_DIR;
 455         const gchar    *pics_dir;
 456         GtkFileFilter  *filter;
 457
 458         chooser_dialog = GTK_FILE_CHOOSER (
 459                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 460                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 461                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 462                                              _("No Image"),
 463                                              GTK_RESPONSE_NO,
 464                                              GTK_STOCK_CANCEL,
 465                                              GTK_RESPONSE_CANCEL,
 466                                              GTK_STOCK_OPEN,
 467                                              GTK_RESPONSE_OK,
 468                                              NULL));
 469
 470         /* Get special dirs */
 471         empathy_conf_get_string (empathy_conf_get (),
 472                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 473                                  &saved_dir);
 474         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 475                 g_free (saved_dir);
 476                 saved_dir = NULL;
 477         }
 478         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 479                 default_dir = NULL;
 480         }
 481         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 482         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 483                 pics_dir = NULL;
 484         }
 485
 486         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 487         if (saved_dir) {
 488                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 489         }
 490         else if (pics_dir) {
 491                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 492         }
 493         else if (default_dir) {
 494                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 495         } else {
 496                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 497         }
 498
 499         /* Add shortcuts to special dirs */
 500         if (saved_dir) {
 501                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 502         }
 503         else if (pics_dir) {
 504                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 505         }
 506         if (default_dir) {
 507                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 508         }
 509
 510         /* Setup preview image */
 511         image = gtk_image_new ();
 512         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 513         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 514         gtk_widget_show (image);
 515         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 516         g_signal_connect (chooser_dialog, "update-preview",
 517                           G_CALLBACK (avatar_chooser_update_preview_cb),
 518                           chooser);
 519
 520         /* Setup filers */
 521         filter = gtk_file_filter_new ();
 522         gtk_file_filter_set_name (filter, _("Images"));
 523         gtk_file_filter_add_pixbuf_formats (filter);
 524         gtk_file_chooser_add_filter (chooser_dialog, filter);
 525         filter = gtk_file_filter_new ();
 526         gtk_file_filter_set_name (filter, _("All Files"));
 527         gtk_file_filter_add_pattern(filter, "*");
 528         gtk_file_chooser_add_filter (chooser_dialog, filter);
 529
 530         /* Setup response */
 531         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 532         g_signal_connect (chooser_dialog, "response",
 533                           G_CALLBACK (avatar_chooser_response_cb),
 534                           chooser);
 535
 536         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 537         g_free (saved_dir);
 538 }
 539
 540 GtkWidget *
 541 empathy_avatar_chooser_new (void)
 542 {
 543         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 544 }
 545
 546 void
 547 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 548                             EmpathyAvatar        *avatar)
 549 {
 550         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 551
 552         avatar_chooser_set_image_from_data (chooser,
 553                                             avatar ? avatar->data : NULL,
 554                                             avatar ? avatar->len : 0);
 555 }
 556
 557 void
 558 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 559                                        const gchar          **data,
 560                                        gsize                 *data_size,
 561                                        const gchar          **mime_type)
 562 {
 563         EmpathyAvatarChooserPriv *priv;
 564
 565         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 566
 567         priv = GET_PRIV (chooser);
 568
 569         if (data) {
 570                 *data = priv->image_data;
 571         }
 572         if (data_size) {
 573                 *data_size = priv->image_data_size;
 574         }
 575         if (mime_type) {
 576                 *mime_type = "png";
 577         }
 578 }
 579